compound (adj.)

late 14c., originally compouned, "composed of two or more elements, mixed, blended," past participle of compounen (see compound (v.)). Of flowers from 1660s; compound eye is attested from 1836; compound sentence, one consisting of two or more full clauses, is from 1772.

compound (n.1)

"enclosed residence," 1670s, "the enclosure for a factory or settlement of Europeans in the East," via Dutch (kampoeng) or Portuguese, from Malay (Austronesian) kampong "village, group of buildings." Spelling influenced by compound (v.). Later used of South African diamond miners' camps (1893), then of large fenced-in residences generally (1946).

compound (n.2)

"a compound thing, something produced by the combination of two or more ingredients," mid-15c., from compound (adj.).

compound (v.)

late 14c., compounen, "to put together, to mix, to combine; to join, couple together," from Old French compondre, componre "arrange, direct," and directly from Latin componere "to put together," from com "with, together" (see com-) + ponere "to place" (see position (n.)). The unetymological -d appeared 1500s in English by the same process  that yielded expound, propound, etc. Intransitive sense is from 1727. Related: Compounded; compounding.