-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) (no pl)
Research involving the use of needles for therapeutic reasons: Jack needed to attend some courses in acuology in order to treat his patients with 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) (no pl)
That part of physiology that deals with the various aspects of glands: Susan needed to find out a lot about the glands in a person's body, so she decided to look for information regarding adenology on the internet.
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 specializes in the study of airborne microorganisms or spores: Jack's dad was an aerobiologist who studied the effects of viruses, pollen, and pollutants that were transported by air currents.
aerobiology (s) (noun) (no pl)
The study of atmospheric constituents, living and nonliving, of biological significance: Aerobiology is the science that includes the research of airborne spores, pathogenic bacteria, allergenic substances, and pollutants.

Aerobiology is that branch of biology which deals with the distribution of living organisms by the air, either by the exterior or outdoor air (extramural aerobiology) or by the indoor air (intramural aerobiology).

aerodontology (s) (noun) (no pl)
The study of the effects of high-altitude flying on the teeth: Aerodentoloty is the field of dentistry that deals with the problems or issues of flying personnel.
aerologist (s) (noun), aerologists (pl)
A specialist in the branch of meteorology concerned with the study of air, especially in the upper atmosphere: Linda's father was an aerologist and did research on total atmospheric meteorology as opposed to surface-based applications.
aerology (s) (noun), aerologies (pl)
The scientific study of atmospheric conditions at heights which are unaffected by the friction of the Earth's surface: Aerology is 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 in the process of being researched.

aerosolology (s) (noun) (no pl)
The scientific study of aerosol (fine spray) therapy: Aerosology is the methodical research dealing with suspensions of microscopic or ultrafine solid or liquid elements in gas.
aesthiology, esthiology (s) (noun) (no pl)
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) (no pl)
The ethical principle or doctrine of the good: Agathology can be explained as the theory of benevolence and 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-.