英语词汇hypocaust的起源、历史背景-英语词源词典

词汇	hypocaust
词源	hypocaust n. "arched fire chamber for heating rooms above via pipes," 1670s, from Late Latin hypocaustum, from Greek hypokauston, literally "heated from below," from hypo- "under; up from under" (see hypo-) + kauston, verbal adjective of kaiein "to burn" (see caustic). Entries linking to hypocaust hypo- word-forming element meaning "under, beneath; less, less than" (in chemistry, indicating a lesser oxidation), from Greek hypo (prep. and adverb) "under, beneath; up from under; toward and under (i.e. into)," from PIE root *upo "under." caustic adj. c. 1400, "capable of burning or destroying organic tissue, corrosive," from Latin causticus "burning, caustic," from Greek kaustikos "capable of burning; corrosive," from kaustos "combustible; burnt," verbal adjective from kaiein, the Greek word for "to burn" (transitive and intransitive) in all periods, which is of uncertain origin with no certain cognates outside Greek. The figurative sense of "sarcastic, severely critical" is attested from 1771. As a noun "a caustic substance," early 15c., from the adjective. updated on September 22, 2015
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hypocaust n.