-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.

parasitologist
An expert in parasitology.
parasitologist
parasitology
The science or study of parasites and parasitism.
parthenology
The part of physiology which deals with virginity.
pathematology
1. Another term for pathology, especially psychopathology.
2. In philosophy, the doctrine of the effects on the mind of pleasure and pain.
pathobiology
Pathology with emphasis more on the biological than on the medical aspects.
pathological anthropology (s) (noun),pathological anthropologies (pl)
The study of diseases in humans from the viewpoint of its differential distribution among groups of people.
pathologist
1. A doctor who specializes in identifying diseases by studying cells and tissues under a microscope.
2. A medical specialist who strives to determine the essential nature of diseases; especially, of the changes in body tissues and organs that cause or are caused by disease.
pathology
1. The study of the nature of diseases with regard to structural and functional changes.
2. The branch of medical science that studies the origin, nature, and course of diseases.
3. Pathology was originally the study of “suffering”.
pathophysiology, pathophysiologic, pathophysiologically
1. The physiological processes associated with disease, injury, or disordered function; the study of such processes.
2. The disturbance of function that a disease causes in an organ, as distinct from any changes in structure that might be caused.
3. Deranged function in an individual or an organ that is due to a disease; a pathophysiologic alteration is a change in function as distinguished from a structural defect.
pathopsychology
The psychology of mental diseases.
patrology
The study of the writings of the Fathers (of the Church), patristics; a treatise on these writings.
patronomatology
The study of the origin of personal names; especially, from the father.
pedodontology, pediadontology (s) (noun); pedodontologies, pediadontologies (pl)
The study of the care of children's teeth.
pedologist, paidologist (s) (noun); pedologists, paidologists (pl)
A person who studies children and their behavior.
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-.