The story
- Latin · derived from‑āceus“belonging to, of the nature of”
- English today-aceous
Suffixal construction from (1) Latin ‑āceus (“belonging to, of the nature of”) + -ous, from oblique stem of -āx, -ācis + -eus and (2) -acea + -ous. Also variant of -acious.
Etymology from Wiktionary, CC BY-SA 4.0.