Submitted by György Chityil ... on Sat, 01/20/2018 - 00:52 Hierarchy: NounDescription: {{biology}} One of the group of pigmented cells that surround the retinophorae of invertebrates.Ngram: retinulaNgram Text: retinulaSource: WiktionaryIssue: 0Wiktionary tag: biologyNgram Count: 1