- adjunct (n.)
- 1580s, from Latin adiunctus "closely connected, joined, united" (as a noun, "a characteristic, essential attribute"), past participle of adiungere "join to" (see adjoin).
- adjunct (adj.)
- 1590s, from Latin adiunctus "closely connected, joined, united," past participle of adiungere "join to" (see adjoin). Adjunct professor is 1826, American English.