"classical concert hall," c. 1600, from Latin odeum, from Greek ōdeion, the name of a public building in Athens designed for musical performances, from ōidē "song" (see ode).

"living in the blood" (as a parasite does), by 1889, from Latin sanguis "blood" (see sanguinary) + colere "to inhabit" (see colony). Also, with classical stem, sanguinicolous.

"standards of judgment or criticism, rules by which opinions or conduct can be tested," 1620s, classical plural of criterion (q.v.). Also see -a (2). Related: Criterial.

a transliteration of Greek daimōn "lesser god, guiding spirit, tutelary deity," 1852; see demon. Employed to avoid the post-classical associations of demon. Related: Daimonic.

before vowels quinqu-, word-forming element from classical Latin meaning "five, consisting of or having five," from Latin quinque "five" (by assimilation from PIE root *penkwe- "five").

"having many inhabitants in proportion to the extent of the country," early 15c., from post-classical Latin populosus "full of people, populous," from populus "people" (see people (n.)). Related: Populously; populousness.