combining form of L. explānātus EXPLANATE, in sense ‘spread, or spreading out in a plane, or flat surface.’
1846. Dana, Zooph. (1848), 253. The species which grow from a central attachment (explanato-glomerate). Ibid., 279. Explanato-foliaceous, suborbiculate, unifacial. Ibid., 602. Carnose, explanato-gemmate Alcyonidæ.
