Retinula

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Retinula \Re*tin"u*la\, 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]