Word Study
liliaceous
CIDE DICTIONARY
liliaceous, a. [L. liliaceus, fr. lilium lily. See Lily.].
Of or pertaining to a natural order of which the lily, tulip, and hyacinth are well-known examples. [1913 Webster]
OXFORD DICTIONARY
liliaceous, adj.
1 of or relating to the family Liliaceae of plants with elongated leaves growing from a corm, bulb, or rhizome, e.g. tulip, lily, or onion.
2 lily-like.
1 of or relating to the family Liliaceae of plants with elongated leaves growing from a corm, bulb, or rhizome, e.g. tulip, lily, or onion.
2 lily-like.
Etymology
LL liliaceus f. L lilium lily
For further exploring for "liliaceous" in Webster Dictionary Online