Introduction
In each Hellenic, Indo-Iranian, and Italic the word for "thousand" is derived from Proto-Indo-European *ǵʰéslo-—apparently "handful"?—but in different forms.
Greek χίλιοι khílioi (kilo-) seems to derive from *ǵʰesliyoy, possibly a plural adjective form?
In Indo-Iranian it's prefixed with *sem- as *sm̥-ǵʰéslom, which could be translated as "one handful", but I think perhaps better rendered here as "a whole handful". This becomes forms like Sanskrit sahásram and Persian hazāra.
Italic also uses the *sm̥-, but makes the whole thing feminine-collective as *smih₂-ǵʰéslih₂, whence Latin mille (milli-).
Teaser
surgery,
garter,
milli-,
kilo-,
millennial,
chrono-,
yard,
Midgard
Full Text
-  
  Proto-Indo-European *ǵʰes- hand, take 
 
  -  
  Proto-Indo-European *ǵʰésōr hand primary noun, gen. and abl. *ǵʰsrés 
 
  -  
  Anatolian *ǵésōr 
 
  -  Hittite 𒆠𒌍𒊬 késːar ke-eš-šar hand 
  
 -  
  Luwic 
 
  -  
  Luwian 
 
  -  Cuneiform Luwian 𒄿𒅖𒊭𒊑𒅖 īssaris i-iš-ša-ri-iš hand 
  
 
    
 -  Lycian 𐊆𐊈𐊕𐊁𐊅𐊆 izredi by hand 
  
 
    
 
    
 -  
  Old Armenian ձեռն jeṙn hand, first, arm, strength, force 
 
  -  Armenian ձեռք jeṙkʻ hand, arm 
  
 -  Old Armenian *jeṙnuk diminutive 
  
 -  Arabic زرنوك zarnūk handle 
  
 
    
 -  
  Hellenic *kʰéhər 
 
  -  
  Classical Greek χείρ kheír hand 
 
  -  Translingual Chiroptera taxonomic order of bats 
  
 -  
  Koine Greek χέριον khérion diminutive 
 
  -  Greek χέρι chéri hand, arm, handle 
  
 
    
 -  
  Classical Greek ἑκατόγχειρος hekatónkheiros hundred-handed 
 
  -  
  Classical Greek ἑκατὸν μὲν χεῖρες hekatòn mèn kheîres 
 
     
 
    
 -  
  Classical Greek χειρουργός kheirourgós craftsman, surgeon "hand-worker" 
 
  -  Latin chīrūrgus surgeon 
  
 -  
  Classical Greek χειρουργία kheirourgíā handiwork, handicraft, surgery 
 
  -  
  Latin chīrūrgia surgery 
 
  -  
  Western Romance 
 
     
 -  
  Latin *chīrurgiānus 
 
  -  
  Western Romance 
 
  -  
  Old French surgien 
 
     
 -  
  Old French cirurgiien 
 
  -  French chirurgien 
  
 -  Dutch chirurgijn 
  
 -  English chirurgeon 
  
 
    
 
    
 
    
 
    
 
    
 
    
 -  English chiro- 
  
 
    
 -  
  Hellenic *kʰéhr-nikʷs hand-wash 
 
  -  Mycenaean Greek 𐀐𐀛𐀣 ke-ni-qa 
  
 -  
  Classical Greek χέρνιψ khérnips water for handwashing 
 
  -  
  Classical Greek χέρνιβον khérnibon wash basin 
 
  -  Arabic كرنيب kirnīb wash basin, bath, dipper 
  
 
    
 
    
 
    
 
    
 -  
  Italic *hezor 
 
     
 -  
  Tocharian *ṣar hand 
 
  -  Arshian tsar hand 
  
 -  Kushean ṣar hand 
  
 
    
 -  
  Proto-Indo-European *ǵʰēsreh₂ 
 
     
 -  
  Proto-Indo-European *ǵʰr̥sós 
 
  -  
  Celtic *garros leg, calf 
 
  -  
  Brythonic *garr 
 
  -  Breton gar leg 
  
 -  Cornish garr leg 
  
 -  Welsh gar leg 
  
 
    
 -  Old Irish gairr calf 
  
 -  
  Gaulish *garrā 
 
  -  
  Western Romance *garra leg, calf 
 
  -  
  Old French gare 
 
  -  
  Old French garet diminutive 
 
  -  
  Middle French jarret 
 
  -  French jarret back of the knee, leg joint of meat 
  
 
    
 -  
  Old French gareter garter 
 
  -  
  Middle French jarretier garter 
 
     
 -  
  Middle English garter garter 
 
     
 
    
 
    
 
    
 
    
 
    
 
    
 
    
 
    
 -  
  Proto-Indo-European *ǵʰéslom numerous, thousand, handful? 
 
  -  
  Proto-Indo-European *sm̥-ǵʰéslom 
 
  -  
  Indo-Iranian *saȷ́ʰásram thousand 
 
  -  
  Indo-Aryan *saźʰásram thousand 
 
  -  
  Sanskrit सहस्रम् sahásram thousand 
 
  -  
  Prakrit sahasra śahaśśa sahasira sahassa 
 
  -  
  Prakrit sāsira 
 
  -  Kannada ಸಾವಿರ sāvira thousand 
  
 -  
  Old Tamil 
 
  -  Tamil ஆயிரம் āyiram thousand 
  
 -  Malayalam ആയിരം āyiraṁ thousand 
  
 
    
 
    
 -  
  Elu *sahasa 
 
  -  Dhivehi ހާސް hās thousand 
  
 
    
 -  
  Sauraseni 
 
  -  
  Northwestern Sauraseni 
 
  -  Kashmiri ساس sās thousand 
  
 
    
 
    
 
    
 -  Hindi सहस्र sahasra thousand 
  
 -  Telugu సహస్రము sahasramu thousand 
  
 
    
 
    
 -  
  Iranian *hajáhram thousand 
 
  -  Avestan 𐬵𐬀𐬰𐬀𐬢𐬭𐬀 hazaŋra thousand 
  
 -  Bactrian υαζαρο uazaro thousand 
  
 -  Pashto زر zër thousand 
  
 -  
  Western Iranian *hazáram 
 
  -  
  Western Iranian *hazára-pátiš thousand-commander 
 
  -  
  Northwestern Iranian 
 
  -  
  Medean *hazārapatiš commander of a thousand  
 
  -  
  Old Persian *hazārapatiš 
 
  -  
  Middle Persian 𐭧𐭦𐭠𐭫𐭥𐭯𐭲 ḥzārāpt 
 
     
 -  Classical Greek ἀζαραπατεῖς azarapateîs 
  
 -  Classical Greek ἀζαβαρίτης azabarítēs 
  
 -  
  Classical Greek χιλίαρχος khilíarkhos commander of a thousand, tribune, chiliarch  
 
  -  Gothic 𐌸𐌿𐍃𐌿𐌽𐌳𐌹𐍆𐌰𐌸𐍃 þūsundifaþs commander of a thousand, tribune  
  
 -  Latin chiliarchus 
  
 -  Classical Syriac ܟܝܠܝܪܟܐ kilirka 
  
 
    
 
    
 
    
 -  
  Parthian 𐭇𐭆𐭓𐭅𐭐𐭕 hazārpet 
 
  -  
  Old Armenian հազարապետ hazarapet chiliarch 
 
  -  Armenian հազարապետ hazarapet chiliarch 
  
 -  Georgian ჰაზარაპეტი hazaraṗeṭi 
  
 
    
 
    
 
    
 
    
 -  
  Northwestern Iranian 
 
  -  Medean *hazāram 
  
 -  Kurdish hezar thousand 
  
 -  
  Parthian 𐭀𐭋𐭐𐭉𐭍 𐭇𐭆𐭀𐭓 hzār ālpin thousand ālpin as an Aramaeogram 
 
  -  
  Middle Persian 𐫍𐫉𐫀𐫡 hzār thousand 
 
  -  
  Persian هزار hazâr thousand 
 
  -  Persian هزاردستان hezâr-dastân nightingale lit. "thousand songs" 
  
 -  
  Hindustani 
 
  -  Hindi हज़ार hazār thousand 
  
 -  Urdu ہزار hazār thousand 
  
 
    
 
    
 
    
 
    
 
    
 -  
  Old Persian *hadāram thousand 
 
     
 
    
 
    
 
    
 -  
  Proto-Indo-European *smih₂-ǵʰéslih₂ 
 
  -  
  Italic *smīɣeslī 
 
  -  
  Latin mille thousand 
 
  -  
  Latin mīllennis thousand-years 
 
  -  
  Latin mīllennium millennium 
 
  -  
  English millennium 
 
  -  Japanese ミレニアム mireniamu millennium 
  
 -  English millennial 
  
 
    
 -  Italian millennio millennium 
  
 -  Spanish milenio millennium 
  
 
    
 
    
 -  
  Latin mīlle mīlle passūs a thousand paces, a mile 
 
  -  
  Central Romance 
 
     
 -  
  Western Romance 
 
     
 -  
  Byzantine Greek μίλιον mílion Roman mile 
 
     
 -  
  West Germanic *mīliju a mile 
 
  -  
  Old English mīl mile 
 
     
 -  
  Frankish *mīla 
 
     
 -  
  Old High German mīla mile 
 
  -  
  Middle High German mīle 
 
  -  German Meile mile 
  
 -  Yiddish מײַל mayl mile 
  
 -  Polish mila mile 
  
 
    
 
    
 
    
 
    
 -  
  Central Romance 
 
  -  Dalmatian mel thousand 
  
 -  
  Italian mille thousand 
 
  -  
  Italian milione million augmentive 
 
  -  
  Middle French million million 
 
  -  French million million 
  
 -  English million 
  
 -  
  Middle French -illion back-formed 
 
  -  
  Middle French billion billion (long-scale, 10^12) 
 
  -  French billion billion (long-scale, 10^12) 
  
 -  English billion 
  
 
    
 -  
  Middle French trillion billion (long-scale, 10^18) 
 
  -  French trillion trillion (long-scale, 10^18) 
  
 -  English trillion 
  
 
    
 
    
 
    
 
    
 
    
 
    
 -  
  Eastern Romance 
 
  -  Aromanian njilje thousand 
  
 -  Romanian mie thousand 
  
 -  Albanian mijë thousand 
  
 
    
 -  
  Western Romance 
 
  -  
  Old French mile thousand 
 
  -  
  Middle French mille thousand 
 
     
 
    
 -  
  Spanish mil thousand 
 
     
 
    
 -  Basque mila thousand 
  
 -  
  Brythonic *mil thousand 
 
  -  Breton mil thousand 
  
 -  Cornish mil thousand 
  
 -  Welsh mil thousand 
  
 
    
 -  
  Old Irish míle thousand 
 
  -  
  Middle Irish 
 
  -  Irish míle thousand 
  
 -  Scottish Gaelic mìle thousand 
  
 
    
 
    
 -  
  French milli- 
 
     
 
    
 
    
 
    
 
    
 -  
  Proto-Indo-European *ǵʰesliyoy plural adjective form? 
 
  -  
  Hellenic *kʰehliyoi 
 
  -  
  Classical Greek χίλιοι khílioi 
 
  -  
  Classical Greek χιλίαρχος khilíarkhos commander of a thousand, tribune, chiliarch  
 
  -  Gothic 𐌸𐌿𐍃𐌿𐌽𐌳𐌹𐍆𐌰𐌸𐍃 þūsundifaþs commander of a thousand, tribune  
  
 -  Latin chiliarchus 
  
 -  Classical Syriac ܟܝܠܝܪܟܐ kilirka 
  
 
    
 -  
  French kilo- 
 
     
 
    
 
    
 
    
 
    
 -  
  Proto-Indo-European *ǵʰóstos 
 
  -  
  Indo-Iranian *ȷ́ʰástas 
 
  -  
  Indo-Aryan *źʰástas 
 
  -  
  Sanskrit हस्तः hástaḥ 𑀳𑀲𑁆𑀢𑀂 hand, elephant trunk, cubit 
 
  -  
  Elu 
 
  -  Dhivehi އަތް at̊ hand, palm, side, direction 
  
 -  Sinhala අත ata hand, side, direction 
  
 
    
 -  
  Pali 𑀳𑀢𑁆𑀣 hattha hand 
 
  -  Khmer ហត្ថ hat hand, arm, elephant trunk, lock of hair, cubit 
  
 
    
 -  
  Sauraseni 
 
  -  
  Hindustani 
 
  -  Hindi हाथ hāth hand 
  
 -  Urdu ہَاتھ hāth hand 
  
 
    
 -  
  Northwestern Sauraseni 
 
  -  Punjabi ਹੱਥ hatthă hand, forearm, cubit 
  
 -  Kashmiri اَتھٕ athụ hand 
  
 
    
 -  
  Western Sauraseni 
 
  -  Gujarati હાથ hāth hand 
  
 -  Romani vast hand 
  
 
    
 
    
 -  Malay hasta cubit 
  
 -  Malayalam ഹസ്തം hastaṁ hand 
  
 -  Telugu హస్తము hastamu hand, forearm, elephant trunk, cubit 
  
 -  
  Sanskrit हस्ती hastī́ 𑀳𑀲𑁆𑀢𑀻 elephant 
 
  -  
  Sanskrit hastināpuraḥ हस्तिनापुरः place name: City of Elephants, Hastinapura 
 
  -  
  Hindustani 
 
  -  Hindi हस्तिनापुर hastināpur 
  
 -  English Hastinapur 
  
 
    
 
    
 -  
  Prakrit 𑀳𑀢𑁆𑀣𑀺 hatthi 
 
  -  
  Elu 
 
  -  Dhivehi އެތް et̊ elephant, palm flower 
  
 -  Sinhala ඇත් æt 
  
 
    
 -  
  Magadhi 
 
  -  
  Bengali-Assamese 
 
  -  Assamese হাতী hati elephant 
  
 -  Bengali হাতি hati elephant, bishop (chess) 
  
 
    
 -  Sylheti ꠀꠔ꠆ꠔꠤ atti 
  
 -  Rohingya háñti 
  
 
    
 -  
  Sauraseni 
 
  -  
  Hindustani 
 
  -  Hindi हाथी hāthī elephant, rook (chess) 
  
 -  Urdu ہاتھی hāthī elephant 
  
 -  English hathi 
  
 
    
 -  
  Northwestern Sauraseni 
 
  -  Punjabi ਹਾਥੀ hāthī elephant, rook (chess) 
  
 
    
 
    
 
    
 
    
 
    
 
    
 -  
  Iranian *jástah 
 
     
 -  
  Indo-Iranian *dʰástas probably dissimilation, or by association with *dáwš: "arm" 
 
  -  
  Iranian *dástah 
 
  -  Bactrian λιστο listo hand 
  
 -  Pashto لاس lâs hand 
  
 -  
  Western Iranian 
 
  -  
  Northwestern Iranian 
 
     
 -  
  Old Persian 𐎭𐎿𐎫 d-s-t hand 
 
  -  
  Middle Persian 𐭩𐭣𐭤 YDE hand Aramaeogram 
 
  -  
  Persian دست dast hand, arm Aramaeogram 
 
  -  
  Hindustani 
 
  -  Hindi दस्त dast hand, cubit 
  
 -  Urdu دست dast hand, cubit 
  
 
    
 
    
 
    
 
    
 
    
 
    
 -  
  Nuristani *dásta hand 
 
  -  Ashkun dóst 
  
 -  Kamviri dǘšt hand 
  
 
    
 
    
 
    
 -  
  Italic *hostos 
 
  -  Latin hostus yield of an olive tree 
  
 
    
 -  
  Proto-Indo-European *ǵʰostiyos 
 
  -  
  Balto-Slavic *źastijas arm? 
 
  -  
  Balto-Slavic *pa-źastijas under arm? with *pa-: "under" 
 
  -  
  East Baltic 
 
  -  Lithuanian pažastìs armpit 
  
 
    
 -  
  Slavic 
 
  -  
  West Slavic 
 
  -  
  Czech paže arm 
 
  -  Czech podpaží armpit re-preffixed with pod- : "under", probably cognate to the previous *pa- prefix 
  
 
    
 
    
 
    
 
    
 
    
 -  
  Italic 
 
  -  
  Latin hostia sacrifice, offering, victim, host (consecrated bread) 
 
     
 
    
 
    
 
    
 -  
  Proto-Indo-European *ǵʰer- to enclose horticulture, court 
 
  -  
  Proto-Indo-European *ǵʰronos 
 
  -  
  Hellenic *kʰrónos 
 
  -  
  Classical Greek χρόνος khrónos time, a period of time, a lifetime, a delay 
 
  -  Greek χρόνος chrónos time, year, tense 
  
 -  Coptic ⲭⲣⲟⲛⲟⲥ khronos time, a period of time, a lifetime, age, duration 
  
 -  English chrono- 
  
 -  
  Classical Greek Χρόνος Khrónos personification of time 
 
     
 
    
 
    
 
    
 -  
  Proto-Indo-European *gʰerdʰ- to enclose, to encircle, enclosure, belt 
 
  -  
  Proto-Indo-European *gʰerdʰeti 
 
  -  
  Germanic *gerdaną 
 
  -  
  East Germanic 
 
  -  
  Gothic *gairdan 
 
  -  Gothic 𐌱𐌹𐌲𐌰𐌹𐍂𐌳𐌰𐌽 bigairdan to gird 
  
 -  Gothic 𐌿𐍆𐌲𐌰𐌹𐍂𐌳𐌰𐌽 ufgairdan to gird 
  
 
    
 
    
 
    
 
    
 -  
  Proto-Indo-European *gʰr̥dʰyeti 
 
  -  
  Germanic *gurdijaną 
 
  -  
  North Germanic 
 
  -  Old Norse gyrða to gird, to girth 
  
 
    
 -  
  West Germanic *gurdijan 
 
  -  
  Old English gyrdan to gird 
 
     
 
    
 -  
  Germanic *gurdilaz girdle 
 
  -  
  North Germanic 
 
     
 -  
  West Germanic *gurdil 
 
  -  
  Old English gyrdel 
 
     
 -  
  Frankish *gurdel 
 
     
 -  
  Old High German gurtil girtle, girth, band 
 
  -  German Gürtel belt, strip 
  
 -  Yiddish גאַרטל gartl belt 
  
 
    
 
    
 
    
 
    
 
    
 -  
  Proto-Indo-European *gʰórdʰos 
 
  -  
  Germanic *gardaz enclosure, court, yard, garden 
 
  -  
  Germanic *midjagardaz the middle enclosure, the world, Midgard 
 
  -  
  East Germanic 
 
  -  Gothic 𐌼𐌹𐌳𐌾𐌿𐌽𐌲𐌰𐍂𐌳𐍃 midjungards the inhabited world, ecumene 
  
 
    
 -  
  North Germanic 
 
  -  
  Old Norse Miðgarðr the Earth, Midgard, the inhabited world 
 
  -  Danish Midgård 
  
 -  
  Icelandic Miðgarður 
 
     
 
    
 
    
 -  
  West Germanic 
 
  -  
  Old English Middanġeard the world, the inhabited world 
 
  -  
  Old English Middaneard the world, the inhabited world 
 
     
 
    
 
    
 
    
 -  
  Germanic *urtgardaz garden, orchard 
 
  -  
  East Germanic 
 
  -  Gothic 𐌰𐌿𐍂𐍄𐌹𐌲𐌰𐍂𐌳𐍃 aurtigards orchard, garden 
  
 -  Old Church Slavonic врътоградъ vrŭtogradŭ herb garden, kitchen garden 
  
 
    
 -  
  North Germanic 
 
  -  
  Old Norse *urtgarðr 
 
  -  Swedish örtagård herb garden 
  
 
    
 
    
 -  
  West Germanic *ortgard 
 
     
 
    
 -  
  East Germanic 
 
  -  
  Gothic 𐌲𐌰𐍂𐌳𐍃 gards yard, court, house, household, family 
 
  -  Gothic 𐌸𐌹𐌿𐌳𐌰𐌽𐌲𐌰𐍂𐌳𐌹 þiudangardi kingdom lit. "~household of a people" 
  
 
    
 
    
 -  
  North Germanic 
 
  -  
  Old Norse garðr 
 
  -  
  Danish gård 
 
  -  Danish Kierkegaard surname: Church-Yard pre-1948 orthography retained in proper nouns 
  
 
    
 -  Icelandic garður 
  
 -  Middle Irish garrda 
  
 -  Middle Welsh garð 
  
 
    
 -  
  Samic *kārtē fenced enclosure, corral 
 
  -  Northern Sámi gárdi 
  
 -  Old Norse Útgarðar 
  
 
    
 
    
 -  
  West Germanic *gard 
 
  -  
  Old English ġeard 
 
     
 -  
  Frankish *gard 
 
  -  Dutch gaard 
  
 -  Old French gart garden 
  
 
    
 -  Old High German gart enclosure, plot of land, circle 
  
 
    
 -  
  Germanic *gardan- *gardô 
 
  -  
  West Germanic *gardō 
 
  -  
  Frankish *gardo 
 
  -  Dutch gaard 
  
 -  
  Old French gardin garden 
 
  -  
  French jardin 
 
     
 -  English garden 
  
 -  Spanish jardín 
  
 
    
 
    
 -  
  Old High German garto garden, paradise 
 
     
 
    
 
    
 
    
 
    
 -  
  Proto-Indo-European *gʰordʰéh₂ 
 
  -  
  Germanic *gerdō 
 
  -  
  East Germanic 
 
  -  Gothic 𐌲𐌰𐌹𐍂𐌳𐌰 gairda girdle, purse 
  
 
    
 -  
  North Germanic 
 
  -  
  Old Norse gjǫrð belt, girdle, saddle girth 
 
  -  Danish gjord 
  
 -  Icelandic gjörð 
  
 -  
  Middle English gerth girth, barrel hoop 
 
     
 
    
 -  
  Samic 
 
     
 
    
 
    
 
    
 
    
 -  Proto-Indo-European *ǵʰer- intestines, bowels, gut (as a material) 
  
 
    
 
    
Visual

Collected English words
Middle Earth,
Midgard,
Chiroptera,
orchard,
milestone,
surgery,
surgeon,
chirurgeon,
chiro-,
garter,
million,
billion,
trillion,
mile,
millennium,
millennial,
milli-,
kilo-,
hathi,
Hastinapur,
host,
chrono-,
Chronos,
gird,
girdle,
yard,
garden,
girth,
Hecatoncheires
Footnotes