- τοξικόν
- toxikon (poison)
- toxic, toxicology
- ὕπέρ
- huper (above, super-)
- hyperactive, hyperbole
- αὐτοψία
- autopsia
- from autoptēs ‘eyewitness’, from autos ‘self’ + optos ‘seen’)
- διάκονος
- diakonos (servant)
- deacon
- ἕλιξ
- helix (spiral ornament)
- helicopter
- ναυτικός
- nautikos (sailor, ship)
- aeronautics, astronaut, nautical
- γλωσσίς
- glōssis (tongue)
- polyglot
- Ἀκαδημία
- Akadēmia
- gymnasium near Athens where Plato and his successors taught, school of philosophy founded by Plato
- ψεῦδος
- pseudos (false, a falsity); pseudonym, pseudoscience
- αὐστηρός
- austēros (harsh)
- austerity
- ἦθος
- ēthos (moral)
- ethics
- νάνος
- nanos (dwarf)
- nanometry, nanosecond, nanotechnology
- νέκταρ
- nektar (drink of the gods)
- nectar
- ἀνταρκτικός
- antarktikos (Antarctic)
- σύμβολον
- sumbolon (symbol)
- symbolic, symbolism
- δίλημμα
- dilēmma (di- ‘twice’ + lēmma ‘premise’)
- πρό
- pro (before)
- prologue
- ἄσθμα
- asthma
- νέος
- neos (new, young)
- neologism, neophyte
- ἄρκτος
- arktos (bear, Ursa Major, pole star)
- ἀντίδοτον
- antidoton (antidote)
- ἀνά
- ana (again)
- σοφία
- sophia (knowledge, wisdom)
- philosophy
- θησαυρός
- thēsauros (storehouse, treasure)
- thesaurus, treasure
- ἀέριος
- aerios (aerial)
- ἀπολογία
- apologia (apology)
- apo, ‘away’ + -logia, denoting a subject of study or interest (e.g. psychology)
- ὥρα
- hōra (season, hour)
- horology, horoscope
- βιβλίον
- biblion (book)
- bibliography, bibliomania, Bible
- νίκη
- nikē (victory)
- ζῷον
- zōon (animal)
- zoology
- ἀντί
- anti (opposite)
- ἔμφασις
- emphasis
- ἀμνησία
- amnēsia
- ἀνατομία
- anatomia
- Ἀσία
- Asia
- βακτήριον
- bactērion (staff, cane)
- τῆλε
- tēle (afar, far off)
- telegram, telephone, television
- ἀήρ
- aēr (air, as in aerodynamics)
- τόπος
- topos (place)
- dystopia, topology, utopia
- ἀμφίβιος
- amphibios
- νεῦρον
- neuron (nerve, sinew)
- neurology
- χαρακτήρ
- kharaktēr (character)
- θρόνος
- thronos (an elevated seat)
- throne
- βλάσφημος
- blasphēmos (evil-speaking)
- blaspheme
- κλῖμαξ
- klimax (ladder)
- climax
- βάρος
- baros (weight)
- barometer, millibar
- κίνημα
- kinēma (movement)
- cinema, cineamatic
- βαπτίζω
- baptizō (dip, immerse)
- baptize
- σύστημα
- sustēma (system)
- systematic
- βορέας
- boreas (north)
- hyperborean, an inhabitant of the extreme north
- μέθοδος
- methodos (following after, pursuit, method, system)
- method, methodical, Methodist
- θέατρον
- theatron (a place for viewing, especially a theatre)
- ἀνάθεμα
- anathema (accursed)
- ἀστήρ
- astēr (star)
- asteroid
- μακρός
- makros (long)
- macrobiotic, macroeconomics
- θέσις
- thesis (placing, a proposition)
- χάος
- khaos (vast chasm, void)
- chaos, chaotic, gas (with Dutch g representing Greek kh)
- τρόπαιον
- tropaion (monument of an enemy’s defeat)
- trophy
- ἀνάλογος
- analogos (proportionate)
- ἀναλφάβητος
- analphabētos (uneducated)
- ἄλφα
- alpha
- Ἄτλας
- Atlas
- ἐνέργεια
- energeia (energy)
- κρυπτός
- kruptos (hidden)
- ἐλαστικός
- elastikos (elastic)
- ἀναχρονισμός
- anakhronismos (wrong time reference)
- anachronism
- μαθηματικός
- mathēmatikos (fond of learning)
- mathematical, polymath
- ἄνθρωπος
- anthrōpos (human being)
- ἄνθραξ
- anthrax
- στροφή
- strophē (turning)
- catastrophe (from cata-, ‘down’)
- δαίμων
- daimōn (deity, genius)
- demon
- ἀσθένεια
- astheneia (weakness)
- asthenia
- ἵππος
- hippos (horse)
- hippodrome, hippopotamus
- γῆρας
- gēras (old age)
- geriatric
- θεραπεία
- therapeia (healing)
- therapeutics
- διάβολος
- diabolos (accuser, slanderer)
- devil, diabolic
- φωνή
- phōnē (voice)
- phoneme, phonetic, phonograph, telephone
- φαντασία
- phantasia (imagination)
- fantasy, fantastic, fantasia
- γένεσις
- genesis (birth)
- gene, genetic
- ἀρθρίτις
- arthritis (inflammation of the joint; arthron = joint)
- ἀνάμνησις
- anamnēsis (recollection)
- βίος
- bios (life)
- biology
- ἔλλειψις
- elleipsis (ellipse, from elleipein, ‘leave out’)
- ellipsis
- ἀσπάραγος
- asparagos
- ἀναισθησία
- anaisthēsia (anaesthesia)
- Ἀφροδίτη
- Aphroditē (literally ‘foam-born’, from aphros ‘foam’)
- aphrodisiac
- γάμμα
- gamma
- gamut (from gamma ut)
- τροπικός
- tropikos (of the turning of the sun)
- tropical, tropics
- τοπικός
- topikos (of or pertaining to τόπος a place)
- topic, topical
- μικρός
- mikros (small)
- micron, microscope
- ἱστορία
- historia (history)
- γυνή
- gunē (woman)
- gynecology, misogynist
- δέλτα
- delta
- θερμός
- thermos (hot)
- hypothermia, thermal
- λόγος
- logos (thought, word)
- pathology (from pathos, ‘suffering, disease’), analogy, geology, catalogue
- Ἀμαζών
- Amazōn
- φοβία
- phobia (irrational fear, fear)
- πρόγραμμα
- programma (proclamation, agenda)
- programmer, program
- βάρβαρος
- barbaros (stranger)
- barbarian
- ἥλιος
- helios (sun)
- helium, heliotropism
- ἄτομος
- atomos (indivisible)
- atomic
- αὐθεντικός
- authentikos (original)
- authenticity
- μανία
- mania (madness, passion, frenzy)
- manic
- κόσμος
- kosmos (order, the universe, ornament)
- cosmetic, cosmology, cosmic, cosmopolitan