Submitted by György Chityil ... on Fri, 01/19/2018 - 22:14 Hierarchy: NounDescription: {{microbiology|planktology}} The membrane complex enveloping the cells of certain plankton including diatoms and dinoflagellatesNgram: thecaNgram Text: thecaSource: WiktionaryIssue: 0Wiktionary tag: microbiologyplanktologyNgram Count: 1