from The Century Dictionary.
- An adjective-suffix, as in herbaceous, cretaceous, etc., used especially in botany and zoölogy, forming English adjectives to accord with New Latin nouns in -aceæ, -acea (which see), as rosaceous, liliaceous, cetaceous, crustaceous, etc.
Sorry, no etymologies found.
In the first place, then, I mean to call every flower either one thing or another, and not an 'aceous' thing, only half something or half another.
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'Butterfly-aceous' from its flower, and 'Pod-aceous' from its seed; -- the inconsistency of the terms thus enforced upon him being perfected in their inaccuracy, for a daisy is not one whit more composite than Queen of the meadow, or Jura Jacinth;  and 'legumen' is not Latin for a pod, but