eponym
term used for anything that is derived from the name of a person
ex) Alzheimer’s, Proteus
Loan word
Latin or Greek word that has been adopted into english without spelling changes
ex) apex, genesis, cancer
Derivative
Like a loan word (taken from another language) but the spelling is changed
ex) arteria -> artery
compound word
terms created by joining word elements together
word elements
prefixes, roots, suffixes
inflection
changing the grammatical function of a word by adding different endings
ex) digitus, digiti, digitorum
root
fundamental part of a greek or latin word that shows its basic meaning
- separable from the inflectional endings
- derived by moving the last vowel and consonant
combining vowel
used to join a root to another root or a root to a suffix
- commonly “o” and “i”
ex) HYDR- (root) + O (combining vowel) + PHOB- (root) + IA (suffix) = hydrophobia
combining from
root with a combining vowel
(the meaning of the root is unchanged by adding a combining vowel)
ex) cerebell/i
elision
the omission of a letter from a word element in order to make the word easier to pronounce
ex) endO + A rteri + al = endarterial
assimilation
change of the last letter of roots in response to the first letter of the root they are attached to
ex) diS+Fusate= disFFusate
syN+Pathy= syMPathy
etymology
the study of the history of a word
semantics
the study of the meanings of words
singular ending
-a
plural ending
-ae
ex) vertebra, vertebrae
singular ending
-ax (-ex, -ix)
plural ending
-aces, (-ices)
ex) thorax (apex, forinx), thoraces (apices, forinces)
singular ending
-en
plural ending
-ina
ex) foramen, foramina
singular ending
-is
plural ending
-es
ex) diagnosis, diagnoses
singular ending
-itis
plural ending
-itides
ex) arthritis, arthritides
singular ending
-ons (-ens, -ans)
plural ending
-ontes (-entes, -antes)
ex) pons (dens, albicans), pontes (dentes, albicantes)
singular ending
-oma
plural ending
-omata
ex) neuroma, neuromata
singular ending
-on
plural ending
-a
ex) phenomenon, phenomena
singular ending
-um
plural ending
-a
ex) brachium, brachia
singular ending
-us
plural ending
-i
ex) fungus, fungi
A-
An-
not, without