‖n.; pl. Retinulae [ NL., dim. of NL. & E. retina. ] (Zool.) One of the group of pigmented cells which surround the retinophorae of invertebrates. See Illust. under Ommatidium. [ 1913 Webster ]
a. (Zool.) Having, or characterized by, retinul&unr_;. [ 1913 Webster ]