§114. Greek Nouns of the Third Declension
To a greater extent than in the 1st and 2nd declensions, the Greek 3rd declension contains many words that appear in English in exact or conventional transliteration. Some of these are proper names from religion and mythology: Ζευς, Προμηθευς, ’Οδυσσευς, ’Ατλας, Τιταν, Καλυψω, Κυκλωψ, Στυξ = Zeus, Prometheus, Odysseus, Atlas, Titan, Calypso, Cyclops, Styx. Many 3rd declension common nouns have also entered English without adaptation: μαρτυρ, νεκταρ, λαρυγξ, κλιμαξ, ἀρωμα, κωμα, πολις, μητροπολις, πυλων, κυδος, ὑβρις = martyr, nectar, larynx, climax, aroma, coma, polis, metropolis, pylon, kudos, hubris. (Both these lists could be extended substantially.)
What follows is a fairly daunting word-list; perhaps you can subdivide it into two or three instalments for learning purposes. If only one Greek word is listed, that will be the nominative (vocabulary) form, which provides an obvious base or combining form. If two Greek words are given, the second will be the genitive singular (= base + -ος).
First, a few comments on English spelling. You have learned that the Greek diphthong αι became regularly adapted in Latin as ae. That convention is reflected in the derivatives of γυναικ- (gynaik– “woman”), παιδ- (paid– “child”), and αἱμ- (haim-, “blood”). What can be confusing is that this ae may be either maintained in English or reduced further to e. The full development is illustrated in the progression from G δαιμων to L daemon to E demon.[1] Thus there are two correct spellings for the medical specialist who treats children—paediatrician or pediatrician. If you look under “Physicians and Surgeons” in the Victoria Yellow Pages, you will find both spellings used (probably revealing the geographical or educational origin of the specialist). The same is true of gynaecology or gynecology, haemorrhage or hemorrhage. In Canadian usage, there is an overwhelming trend towards the simpler e spelling. The only problem with this simplification is that it can sometimes create minor confusion. A perfect example is the Greek root παιδ- (paid-, “child”). If it is kept as paed-, the etymology of its derivatives will be abundantly clear; if, however, it is reduced to ped– (as is customary in North America), it becomes identical in form to the unrelated Latin root for “foot.” Because of Latin derivatives like pedal and pedicure—and the hybrid pedometer (an instrument to measure walking speed)—one may run the risk of associating orthopedic (orthopaedic) with feet, or of wrongly viewing pedophilia as some kind of foot fetish. Other derivatives of παιδ- include pedagogue (G παιδ-αγωγος, “child-leader” > L paedagogus), pedagogy, encyclopedia,[2] pederast (“child-lover,” now almost completely supplanted by pedophile, a word that dates only from 1951), and pedodontist (< παιδ-οδοντ-ιστης,[3] a dentist who works on children’s teeth). Notice, by the way, that the first -o- of ped-odont-ist is not a connecting vowel, since it begins the ba