Etymology
Advertisement
etiology (n.)
also aetiology, aitiology, "science of causes or causation," 1550s, from Late Latin aetiologia, from Greek aitiologia "statement of cause," from aitia "cause, responsibility" (from PIE *ai-t-ya-, from root *ai- (1) "to give, allot;" see diet (n.1)) + -logia "a speaking" (see -logy). Related: Etiologic; etiological.
Related entries & more 
Advertisement
aetio- 
word-forming element used in chemistry and indicating "a fundamental degradation product of a complex organic compound" [Flood], from Latinized combining form of Greek aitia "a cause, an origin" (see etiology). In older, general use it has been reduced in English to etio- (see æ (1)).
Related entries & more 
serape (n.)

also sarape, type of shawl for men in Spanish-American regions, often of bright colors, 1834, from Mexican Spanish sarape, which probably is from an indigenous Mexican language, but there is no similar word and no -r- sound in Nahuatl. David L. Gold ("Studies in Etymology and Etiology," 2009) suggests possibly from Tarascan /'charakwa/.

Related entries & more