Definition of alliaceous in English:

alliaceous

adjective

Botany
  • Relating to or denoting plants of a group that comprises the onions and other alliums.

    • ‘Russian exports of onions, shallots, garlic, leeks and other alliaceous vegetables, fresh or chilled, went down by 21%.’
    • ‘About 40 days afterward a thin slice is cut off transversely from its top, and a milky juice of a fetid, alliaceous odor gradually exudes.’

Origin

Late 18th century: from Latin allium garlic + -aceous; compare with the modern Latin taxonomic family name Alliaceae.

Pronunciation:

alliaceous

/ˌalɪˈeɪʃəs/