Meaning of addiment in English:

addiment

Pronunciation /ˈadɪm(ə)nt/

noun

  • 1 rare Something that is added, an addition; an additive.

  • 2Medicine
    = "complement". Now chiefly historical.

Origin

Mid 17th century; earliest use found in Peter Heylyn (1599–1662), Church of England clergyman and historian. Apparently a shortening of additament.