Having the shape or form of a rib; rib-shaped.
From Latin 'costa' (rib) plus '-form' (having the shape of). Used in anatomy and biology to describe structures that resemble ribs in their elongated, curved form.
Many things in nature are rib-shaped because ribs are a perfect evolutionary design—they're strong, flexible, protective, and space-efficient, so 'costiform' describes a shape that evolution keeps reinventing.
Complete word intelligence in one call. Free tier — 50 lookups/day.