| kakós |  | cac-, kak-[60] | bad | κακός (kakós), κάκιστος (kákistos) | cachexia, cacistocracy, cacodemon, cacoepy, cacography, cacophobia, cacophobe, cacophobic, cacophonous, cacophony, cacorrhacitis, kakistocracy, kakistocrat |
| kalós |  | cal-, call- | beautiful | καλός (kalós) “beautiful”; κάλλος (kállos) “beauty”, κάλλιστος (kállistos) | calisthenics, calligraphy, Callista, Callisto, calophyllous, kaleidoscope |
| kalúptein |  | calyp-[61] | cover | καλύπτειν (kalúptein), καλυπτός (kaluptós), κάλυξ, κάλυκος (kálux, kálukos) | apocalypse, apocalyptic, apocalypticism, calyce, calyptra, Calyptrogyne, calyx, epicalyx, eucalypt, eucalyptus |
| kapnós |  | capn-[62] | smoke | καπνός (kapnós), καπνόομαι | capnogram, capnograph, capnography, capnolagnia, capnomancy, capnometer, capnometry, capnomor, capnophile, hypercapnia, hypocapnia |
| kardiá |  | cardi-[63] | heart | καρδιά (kardiá) | cardiac, cardialgia, cardiograph, cardioid, cardiologist, cardiology, cardiomegaly, cardiomyopathy, cardioplegia, cardioplegic, cardiospasm, electrocardiogram, electrocardiography, endocardium, epicardium, hemicardia, myocardium, neurocardiology, pericardium |
| karpós |  | carp-[64] | fruit | καρπός (karpós) | acarpous, acrocarpous, amphicarpous, angiocarpous, anisocarpic, Carpo, carpogonium, carpology, carpophagous, carpophore, carpospore, cystocarp, dipterocarp, endocarp, epicarp, exocarp, Karpos, mericarp, mesocarp, monocarpic, pericarp, polycarpic, procarp, pseudocarp |
| karpós |  | carp-[65] | wrist | καρπός (karpós) | carpal, carpal tunnel syndrome, carpus, metacarpus |
| katá |  | cata-, cat- | down, against, back | κατά (katá) “down, against, back” | catabolic, catacomb, catalyst, catarrhine, catastrophe, catatonia, cathode, cation |
| katharós |  | cathar-[66] | pure | καθαρός (katharós) | catharsis, cathartic |
| kaíein |  | caust-, caut- | burn | καίειν (kaíein), καυστός, καυτός (kaustós, kautós), καυστικός (kaustikós), καῦσις (kaûsis), καῦμα (kaûma) | calm, catacaustic, causalgia, causalgic, caustic, cauter, cauterize, cautery, diacaustic, encaustic, holocaust, hypocaust |
| kainós |  | cen-, caen-[67] | new | καινός (kainós) | caenogastropod, caenogenesis, Cenozoic |
| kenós |  | cen- | empty | κενός (kenós) | cenotaph, kenosis |
| koinós |  | cen-, coen-[68] | common | κοινός (koinós) | cenobite, coenesthesia, coenocyte, epicene, epicœne, koinonos, koinophilia |
| kéntron |  | centr- | center | κεντεῖν, κέντησις, κέντρον (kéntron) “needle”, “spur”, κεντρικός, κεντρισμός | acentric, acrocentric, amniocentesis, anthropocentric, anthropocentrism, barycenter, biocentric, biocentrism, centaur, centauromachy, centesis, centre, centric, centrism, centrist, centroid, centromere, centromeric, centrosphere, centrosymmetric, centrosymmetry, centrum, eccentric, eccentrism, eccentrist, ecocentric, ecocentrism, ecocentrist, egocentric, egocentrism, enterocentesis, epicentre, holocentric, metacentric, monocentric, neocentromere, orthocenter, orthocentric, paracentesis, pericardiocentesis, technocentric, technocentrism, telocentric, thoracentesis, thoracocentesis |
| kephalḗ |  | cephal- | head | κεφαλή (kephalḗ) | acephalic, acephaly, anencephaly, autocephaly, brachiocephalic, brachycephalic, cephalic, cephalomancy, cephalometry, cephalon, cephalopagus, cephalopod, diencephalon, dolichocephalic, encephalitis, encephalogram, encephalopathy, holoprosencephaly, hydrocephalus, macrocephaly, mesaticephalic, mesencephalic, mesocephalic, metencephalon, microcephaly, myelencephalon, neencephalon, paleencephalon, prosencephalon, rhombencephalon, rhombencephalosynapsis, syncephalus, telencephalon |
| kéramos |  | ceram- | clay | κέραμος (kéramos) | ceramic |
| kéras |  | cerat- | horn | κέρας (kéras), κέρατος (kératos) | keratin, triceratops |
| khaítē |  | chaet-[69] | hair, bristle, or seta | χαίτη (khaítē) “long hair” | chaetophobia, chaetophorous, Chaetomium, Chaetomorpha, Oligochaeta, Polychaeta, polychaete, spirochaete, spirochete |
| kheír |  | chir-[70] | of the hand or hands | χείρ (kheír) “hand” | chiral, chiropractic, chiroptera, chirurgy, enchiridion, Haplocheirus |
| khelṓnē |  | chelon- | relating to a turtle | χελώνη (khelṓnē) “tortoise” | Archelon, chelonia |
| khlōrós |  | chlor-[71] | green | χλωρός (khlōrós) | chloranthy, chlorine, chlorophobia, chlorophyll, chloroplast, pyrochlore |
| khóndros |  | chondr- | cartilage | χόνδρος (khóndros) | hypochondriasis, osteochondritis |
| khoreía |  | chore- | relating to dance | χορεία (khoreía) “dancing in unison” from χορός (khorós) “chorus” | chorea, choree, choreia, choreography, chorus, hemichorea |
| khrêsthai |  | chres- | use | χράω, χρῆσθαι (khrêsthai), χρηστός (khrēstós), χρήστης, χρῆσις (khrêsis), χρήσιμος | chresard, chresonym, chrestomathic, chrestomathy, heterochresonym, heterochresonymy, orthochresonym, orthochresonymy |
| khrôma |  | chro-, chrom- | color | χρῶμα (khrôma) | achromat, achromatic, achromatism, achromatopsia, achromatopsic, amphichroic, apochromat, auxochrome, chroma, chromatic, chromatid, chromatophore, chrome, chromium, chromogen, chromolithography, chromophobia, chromophore, chromosome, dichroic, dichroism, dichromatic, heliochrome, heterochromatic, heterochromatin, microchromosome, monochromatic, monochrome, photochromism, pleochroism, polychromatic, polychrome, trichroism, trichromatic, trichromic |
| khrónos |  | chron-[73] | time | χρόνος (khrónos) | anachronism, asynchronous, biochronology, chronaxie, chronic, chronicle, chronogram, chronograph, chronology, chronometer, chronometry, chronophobia, chronophotography, chronostasis, geochronology, heterochrony, hydrochronometer, isochron, protochronism, synchronic, synchronism, synchronize, synchronous, tautochrone |
| khrusós |  | chrys-[74] | gold | χρυσός (khrusós), χρύσεος “golden” | chrysalis, chryselephantine, chrysolite, chrysophobia, chrysoprase |
| kirrhós |  | cirr-[75] | orange | κιρρός (kirrhós) | cirrhosis |
| kládos |  | clad-[76] | branch | κλάδος (kládos) | clade, cladistics, cladogenesis, cladogram, heterocladic |
| klastós |  | clast- | broken | κλᾶν, κλαστός (klastós), κλάσις, κλάσμα | anorthoclase, antanaclasis, clastic, iconoclast, orthoclase, osteoclast, plagioclase, pyroclastic, synclastic |
| kleís |  | clav- | key | κλείς (kleís) “key” from κλείειν, (kleíein) “to close” | clavichord, clavicle, conclave |
| kleistós |  | cleist- | closed | κλείειν, κλειστός (kleistós), κλεῖσμα | cleistogamy, cleistothecium, enterocleisis, kleisma |
| kleîthron |  | cleithr- | bar, key | κλεῖθρον (kleîthron) | Clathrus, cleithrophobia, cleithrum |
| ekklēsíā |  | cle-[77] | call | ἐκκλησίᾱ, κλῆσις, κλητός (ekklēsíā, klêsis, klētós) | ecclesia, Ecclesiastes, ecclesiastic, ecclesiology, ecclesiophobia, epiclesis, paraclete |
| klínē |  | clin- | bed | κλίνη (klínē) | clinic |
| kókhlos |  | cochl-[78] | snail, spiral shell | κόχλος (kókhlos) | cochlea |
| koîlos |  | coel- | hollow | κοῖλος (koîlos) | blastocoel, coelom, coelomate, coelomic, enterocoely, pseudocoelomate, sarcocele, schizocoelomate, schizocoely, spongocoel |
| kônos |  | con-[80] | cone | κῶνος (kônos), κωνικός (kōnikós) | conic, conical, conicoid, conodont, conoid, conoscope, orthocone, orthoconic, polyconic |
| kópros |  | copr-[81] | dung | κόπρος (kópros) | copremia, coprographia, coprolagnia, coprolalia, coprolite, coprolith, coprology, coprophagia, coprophagy, coprophilia, copropraxia, encopresis, encopretic |
| kórax |  | corac-[82] | raven | κόραξ, κόρακος (kórax, kórakos) | coracoid |
| kósmos |  | cosm-[83] | universe | κόσμος (kósmos) | cosmic, cosmogeny, cosmogony, cosmology, cosmonaut, cosmopolitan, cosmopolite, cosmos, microcosm |
| kosmeîn |  | cosmet- | the art of dress and ornament | κοσμεῖν (kosmeîn), κοσμητική (kosmētikḗ) from κόσμος (kósmos) | cosmesis, cosmetics, cosmetologist, cosmetology |
| kotúlē |  | cotyl-[84] | cup | κοτύλη (kotúlē) | cotyledon, dicotyledon, dicotyledonous, eudicotyledon, monocotyledon, monocotyledonous, tricotyledonous |
| krátos |  | -cracy, -crat | government, rule, authority | κράτος (krátos), κρατία (kratía) | acrasia, akrasia, akratic, anocracy, aristocracy, autocracy, autocrat, autocratic, bureaucracy, democracy, democratic, pancratium, plutocracy, technocracy, technocrat, theocracy |
| kraníon |  | crani-[85] | skull | κρανίον (kraníon) | craniologist, craniometry, craniosynostosis, cranium, hemicrania, megrim, migraine |
| krēpís |  | crepid-[86] | boot, shoe | κρηπίς, κρηπίδος (krēpís, krēpídos), κρηπίδιον, κρηπίδωμα | crepidoma |
| kríkos |  | cric-[87] | ring | κρίκος (kríkos), κρικοειδής (krikoeidḗs) | cricoid, cricoidectomy, Cricosaurus, cricothyroid, cricothyrotomy, cricotomy |
| krínein |  | crit-, crisi-[88] | judge, separate | κρίνειν (krínein), κρίσις (krísis), κρίμα (kríma) | apocrine, crisis, criterion, critic, critical, criticaster, criticise, criticism, critique, diacritic, eccrine, eccrinology, eccrisis, eccritic, endocrine, endocrinology, exocrine, heterocrine, holocrine, hypercriticism, hypocrisy, hypocrite, kritarchy, Kritosaurus, merocrine, syncrisis |
| krossós |  | cross-[89] | fringe, tassel | κροσσός (krossós) | crossopterygii |
| krúptein |  | crypt-[90] | hide, hidden | κρύπτειν (krúptein) “to hide”, κρυπτός (kruptós) | apocrypha, apocryphal, archaeocryptography, crypt, cryptanalysis, crypteia, cryptic, cryptobiosis, cryptobiotic, cryptochrome, cryptogam, cryptogenic, cryptography, cryptology, cryptomonad, cryptophyte, cryptosystem, grot, grotesque, grotto |
| kteís |  | cten-[91] | comb | κτείς, κτενός (kteís, ktenós) | ctenidium, ctenoid, ctenophore |
| kúbos |  | cub-[92] | cube | κύβος (kúbos) | cubic, cuboctahedron, cuboid, hemicube, hypercube |
| kuanós |  | cyan-[93] | blue | κυανός (kuanós) | cyanic, cyanide, cyanogen, cyanophobia, cyanophore, cyanosis, cyanotic, isocyanic |
| kúklos |  | cycl-[94] | circle | κύκλος (kúklos), κυκλικός (kuklikós) | acyclic, anticyclone, anticyclonic, bicycle, cycle, cyclic, cyclide, cycloid, cyclone, cyclops, cyclosis, cyclotomic, dicyclic, eccyclema, epicycle, epicycloid, hemicycle, hemicyclium, heterocyclic, homocyclic, hypercycle, hypocycloid, isocyclic, mesocyclone, monocyclic, polycyclic, pseudocyclosis, tetracyclic, tricycle, tricyclic, unicycle |
| kulíndein |  | cylind-[95] | roll | κυλίνδειν (kulíndein), κύλινδρος (kúlindros) | cylinder, cylindric, cylindroid, cylindroma, pseudocylindric |
| kúōn |  | cyn-[96] | dog | κύων, κυνός (kúōn, kunós) | cynic, cynicism, cynodont, cynology, cynophagy, cynophilia, cynophobia, Cynosaurus, cynosure, eucynodont |
| kústis |  | cyst-[97] | capsule | κύστις (kústis) | cysteine, cystic, cysticercus, cystine, cystolith, cystoma, oocyst, polycystic |
| kútos |  | cyt-[98] | cell | κύτος (kútos) | astrocyte, cnidocyte, cytapheresis, cytaster, cytokine, cytokinesis, cytokinin, cytology, cytoplasm, cytostasis, cytostatic, exocytosis, gonocyte, hypercytosis, leukocyte, leukocytosis, monocyte, monocytopoiesis, pancytopenia, phagocytosis, polycythaemia, polycythemia, syncytium |
