Having ribs or ridges that are equal in size, number, or prominence.
From Latin 'aequus' (equal) + 'costatus' (ribbed, from 'costa' meaning rib). This botanical and zoological term describes organisms with uniform ribbing.
You'll see this term in shell and mollusk descriptions—when a shell has equicostate patterns, the ridges running along it are like nature's own perfectly measured ruler, which can help scientists identify different species.
Complete word intelligence in one call. Free tier — 50 lookups/day.