Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
alliaceous is an adjective meaning "of or pertaining to the botanical genus Allium". It carries 2 recorded senses.
of or pertaining to the botanical genus Allium
“onions, leeks, garlic, chives are alliaceous plants”
botany
smelling of onions or garlic
Definitions, synonyms and semantic relations for alliaceous come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.