-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.

phrenology (s) (noun), phrenologies (pl)
1. The theory that mental faculties or character can be determined by the location of bumps and other topographical features on the skull: In phrenology a protuberance here might indicate intelligence, a lump there, willpower, etc.
2. The scientific study of the conformation or shape of the head, or cranium, based on a belief that it is indicative of a person's intellectual abilities and skills: Now nobody really believes that the shape of our heads is a window into our personalities or intelligence, as is presented in phrenology.
3. Etymology: from Greek phren, "mind" + -logos, "knowledge".
The study of the skull to determine mental faculties.
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phretobiology
The study of organisms in water tanks.
phthisiologist
1. A physician who specializes in phthisiology.
2. An obsolete term for specialist in tuberculosis.
phthisiology
1. The care, treatment, and study of tuberculosis.
2. The study or science of tuberculosis.
phycologist
phycology (noun)
The branch of botany dealing with algae or concerned with the scientific study of algae which is also known as algology.
phylaxiology
phyllobiology
The study of leaves.
physicology
The science of nature, or of natural objects; that branch of science which treats of the laws and properties of matter, and the forces acting upon it; especially, that department of natural science which treats of the causes (as gravitation, heat, light, magnetism, electricity, etc) that modify the general properties of bodies; natural philosophy.
physiologist
1. A natural philosopher; a naturalist who is engaged in the biological study of the functions of living organisms and their parts.
2. Someone who studies the functions of a living organism or any of its parts.
3. A biologist specializing in physiology.
physiology
1. The branch of biology that deals with the internal workings of living things, including functions such as metabolism, respiration, and reproduction, rather than with their shape or structure.
2. The biological study of the functions of living organisms and their parts.
3. All the functions of a living organism or any of its parts.
4. The way a particular body or organism works.

This is a branch of medical science that deals with the healthy functions of different organs, and the changes that the whole body undergoes in the course of its activities.

physiopathology
1. The branch of medicine that studies how disease disrupts normal body functions.
2. The science dealing with the disturbances of bodily function resulting from disease.
phytobiology
Botany, particularly the life history of plants.
phytocoenology
phytology
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-.