| 单词 | terpin hydrate |
| 释义 | terpin hydrate in American English (ˈtɜrpɪn) a colorless crystalline powder, C10H20O2·H2O, used chiefly, in the form of an elixir, as an expectorant or cough syrup Word origin < terpine: see terpineolterpin hydrate in American English (ˈtɜːrpɪn) noun Pharmacology a white, crystalline powder, C10H20O2⋅H2O, usually used in combination with codeine, as an expectorant Word origin [1865–70; terp(ene) + -in2]This word is first recorded in the period 1865–70. Other words that entered Englishat around the same time include: black belt, figure skating, goulash, springboard, tick-tack-toe-in is a noun suffix used in a special manner in chemical and mineralogical nomenclature(glycerin; acetin, etc.). In spelling, usage wavers between -in and -ine. In chemistry a certain distinction of use is attempted, basic substances havingthe termination -ine rather than -in (aconitine; aniline, etc.), and -in being restricted to certain neutral compounds, glycerides, glucosides, and proteids(albumin; palmitin, etc.), but this distinction is not always observed |
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