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Definition of Retinula
1. n. One of the group of pigmented cells which surround the retinophoræ of invertebrates. See Illust. under Ommatidium.
Definition of Retinula
1. a neural receptor of an arthropod's eye [n -LAE or -LAS]
Medical Definition of Retinula
1.
Origin: NL, dim. Of NL. & E. Retina.