Covered with a helmet, or furnished with something having the shape or position of a helmet.In entomology, provided with a galea, as the maxillæ of certain insects.In ornithology, having on the head a crest of feathers resembling a helmet; or, and oftener, having a horny casque upon the head, as the cassowary, or a frontal shield, as a coot or gallinule.In botany, having a galea.In ichthyology, having a casque-like induration of the skin of the head, as many siluroid fishes.Helmet-shaped: as, a galeate echinus; the galeate upper sepal of the monk's-hood.