Etymology
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Words related to -ology

-logy 

word-forming element meaning "a speaking, discourse, treatise, doctrine, theory, science," from Greek -logia (often via French -logie or Medieval Latin -logia), from -log-, combining form of legein "to speak, tell;" thus, "the character or deportment of one who speaks or treats of (a certain subject);" from PIE root *leg- (1) "to collect, gather," with derivatives meaning "to speak (to 'pick out words')." Often via Medieval Latin -logia, French -logie. In philology "love of learning; love of words or discourse," apology, doxology, analogy, trilogy, etc., Greek logos "word, speech, statement, discourse" is directly concerned.

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anesthesiology (n.)

1908, from anesthesia + -ology.

Anesthesiology. This is the new term adopted by the University of Illinois defining "the science that treats of the means and methods of producing in man or animal various degrees of insensibility with or without hypnosis." [Medical Herald, January, 1912]
arachnologist (n.)
"student of arachnids," 1806; see arachnid + -ology. Related: Arachnology (1850).
araneology (n.)
"study of spiders," 1798, from araneae, zoological name of the order of spiders, from Latin aranea "spider" (source French (araignée, Spanish (araña, Italian aragna; see arachnid) + -ology. Related: Araneous (ad.), 1650s; araneidan (n.), 1835; araneologist.
archaeology (n.)
c. 1600, "ancient history," from French archéologie (16c.) or directly from Greek arkhaiologia "the study of ancient things;" see archaeo- + -ology. Meaning "scientific study of ancient peoples and past civilizations" is recorded by 1825.
aristology (n.)
"science of dining," 1835, with -ology "study of" + Greek ariston "breakfast, the morning meal" (later "the mid-day meal"), a contraction of a locative ari- (see ere) + *ed- "to eat" (see eat). Related: Aristological; aristologist.
Assyriology (n.)
1846, from Assyria + -ology. Related: Assyriologist.
audiology (n.)
science of hearing and treatment of deafness, 1946, from audio- + -ology. Related: Audiologist.
bacteriology (n.)
"scientific study of microbes," 1884, from German; see bacteria + -ology. Related: Bacteriological (1886); bacteriologist. Bacteriological warfare is from 1924.
caliology (n.)

"scientific study of birds' nests," 1875, from Greek kalia "a dwelling, hut, nest" (from PIE root *kel- (1) "to cover, conceal, save") + -ology. Related: Caliological.