Having a name that is appropriate and fitting for something; characterized by the quality of being well-named.
From Greek eu- (well) + onyma (name) + -ous (adjective suffix). Describes things whose names suit them well.
The Euonymus plant itself has a euonymous name—it was called 'the well-named one' by ancient Greeks because its properties made its purpose obvious.
Complete word intelligence in one call. Free tier — 50 lookups/day.