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Definition of ricinus in English: ricinusnoun ˈrɪsɪnəsˈrʌɪsɪnəs Originally: the castor oil plant, Ricinus communis, a shrub native to the Mediterranean, eastern Africa, and parts of Asia and naturalized throughout the tropics, having alternate palmate leaves and seeds which are the source of castor oil and of the toxic substance ricin. In later use also (in form Ricinus): the genus of the family Euphorbiaceae to which this plant belongs.
noun ˈrɪsɪnəsˈrʌɪsɪnəs Zoology rare A tick; especially the dog tick, Ixodes ricinus.
Origin Old English; earliest use found in Pseudo-Apuleius' Herbarium. From classical Latin ricinus castor oil plant (Pliny), of unknown origin
mid 17th century; earliest use found in John Rowland (fl. c1658). From classical Latin ricinus parasite on sheep or other animals, tick, of unknown origin; perhaps the same word as classical Latin ricinus. Adopted in scientific Latin as ricinus, specific name (in Acarus ricinus, Linnaeus Systema naturae (ed. 10, 1758) I. 615). Definition of ricinus in US English: ricinusnoun Originally: the castor oil plant, Ricinus communis, a shrub native to the Mediterranean, eastern Africa, and parts of Asia and naturalized throughout the tropics, having alternate palmate leaves and seeds which are the source of castor oil and of the toxic substance ricin. In later use also (in form Ricinus): the genus of the family Euphorbiaceae to which this plant belongs.
noun Zoology rare A tick; especially the dog tick, Ixodes ricinus.
Origin Old English; earliest use found in Pseudo-Apuleius' Herbarium. From classical Latin ricinus castor oil plant (Pliny), of unknown origin<br>mid 17th century; earliest use found in John Rowland (fl. c1658). From classical Latin ricinus parasite on sheep or other animals, tick, of unknown origin; perhaps the same word as classical Latin ricinus. Adopted in scientific Latin as ricinus, specific name (in Acarus ricinus, Linnaeus Systema naturae (ed. 10, 1758) I. 615). |