Having nine petals; used in botanical descriptions of flowers.
From Greek 'ennea' (nine) + 'petalon' (petal, leaf), with '-ous' forming the adjective. This botanical term emerged as scientists needed precise vocabulary to describe flower structure.
Most flowers you see have petals in numbers like 3, 4, or 5, so 'enneapetalous' (nine-petaled) flowers are comparatively rare—yet the word exists because botanists catalogued everything, even the uncommon cases, making nature's variations speakable and countable.
Complete word intelligence in one call. Free tier — 50 lookups/day.