-ology, -logy, -ologist, -logist

(Greek: a suffix meaning: to talk, to speak; a branch of knowledge; any science or academic field that ends in -ology which is a variant of -logy; a person who speaks in a certain manner; someone who deals with certain topics or subjects)

The word -ology is a back-formation from the names of certain disciplines. The -logy element basically means "the study of ____". Such words are formed from Greek or Latin roots with the terminal -logy derived from the Greek suffix -λογια (-logia), speaking, from λεγειν (legein), "to speak".

The suffix -ology is considered to be misleading sometimes as when the "o" is actually part of the word stem that receives the -logy ending; such as, bio + logy.

Through the years -ology and -logy have come to mean, "study of" or "science of" and either of these suffixes often utilize the form of -ologist, "one who (whatever the preceding element refers to)".

The examples shown in this unit represent just a small fraction of the many words that exist in various dictionaries.

hematology
hemerocology
The study of the ecology of cultivated areas and culture communities.
hemerology
hemipterology
hemorheology
The science of the flow of blood in relation to the pressures, flow, volumes, and resistances in blood vessels, especially in terms of blood viscosity and red cell deformation in the microcirculation.
heortology
hepatologist
hepatology
heresiologist
A student or specialist of heresies.
heresiology
The study of heresies.
herniology
The scientific study of hernias.
herpetologist
herpetology (hur" pi TAHL uh jee) (s) (noun), herpetologies (pl)
The branch of zoology concerned with the study of reptiles and amphibians.
heterologous
1. Having a different relation, or consisting of different elements; not corresponding.
2. Made up of tissue not normal to the part; xenogeneic.
3. Pertaining to antigen and antibody that are not homologous, i.e., the antigen is not the one that elicited the production of the antibody.
heterology
Cross references of word families related directly, or indirectly, to: "talk, speak, speech; words, language; tongue, etc.": cit-; clam-; dic-; fa-; -farious; glosso-; glotto-; lalo-; linguo-; locu-; logo-; loqu-; mythico-; ora-; -phasia; -phemia; phon-; phras-; Quotes: Language,Part 1; Quotes: Language, Part 2; Quotes: Language, Part 3; serm-; tongue; voc-.