-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.

acuology (s) (noun)
The study of the use of needles for therapeutic purposes, as in acupuncture.
addictionologist (s) (noun), addictionologists (pl)
A specialist in the study and treatment of those who are physiologically or mentally dependent on tobacco, alcohol, or other substances: His father was such a slave to smoking and booze, that it motivated Bryon to study and to become an addictionologist so he could help his father, and others, to overcome their uncontrollable dependence on such dangerous elements.
addictionology (s) (noun), addictionologies (pl)
The study, management, and treatment of physical and mental excesses that harm people because they can not control their over dependence on them: There are more and more reasons for there to be specialists in various forms of addictionologies because there are increases in the various kinds of uncontrollable compulsions that are expanding among our current societies around the world.
adenology (s) (noun)
That part of physiology that deals with the various aspects of glands.
aedoeology, edoeology (s) (noun)
1. The study of the generative organs.
2. The science of the organs of generation.
aerobiologist (s) (noun), aerobiologists (pl)
Someone who studies or specializes in the study of airborne microorganisms or spores.
aerobiology (s) (noun)
1. The study of atmospheric constituents, living and nonliving, of biological significance; for example, airborne spores, pathogenic bacteria, allergenic substances, and pollutants.
2. That branch of biology which deals with the distribution of living organisms by the air, either the exterior or outdoor air (extramural aerobiology) or the indoor air (intramural aerobiology).
aerodontology (s) (noun)
The study of the effects of high-altitude flying on the teeth.
aerologist (s) (noun), aerologists (pl)
1. A specialist in the branch of meteorology concerned with the study of air, especially in the upper atmosphere.
2. Someone who studies total atmospheric meteorology as opposed to surface-based applications.
aerology (s) (noun)
1. The scientific study of atmospheric conditions at heights which are unaffected by the friction of the earth's surface.
2. The branch of meteorology that studies the total vertical extent of the earth's atmosphere as opposed to the atmosphere which is close to the earth's surface.

The most commonly studied atmospheric factors in aerology are air temperature, atmospheric pressure, humidity, wind, and ozone levels. Radioactivity and some aspects of long-wave radiation are also studied.

aerosolology (s) (noun)
The scientific study of aerosol (fine spray) therapy.
aesthiology, esthiology (s) (noun) (usually singular)
The study of the comparative anatomy of the organs of sensation or feeling: Dr. Schmidt, the neurosurgeon, specialized in aesthiology and before long, he became a world leader in this field.
aesthophysiology, esthophysiology (s) (noun); aesthophysiologies, esthophysiologies (pl)
The scientific study of the organs of sensation: As a neurologist, Dr. Jackson utilized esthophysiology to better understand the relationships between the consciousness and the organic responses of her patients.
agathology (s) (noun)
1. The science or doctrine of good.
2. The principle of benevolence.
3. The study of the nature of goodness.
agnoiology (s) (noun)
1. The doctrine concerning those things of which we are necessarily ignorant.
2. The science or study of ignorance, which determines its quality and conditions.
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-.