| origanum | <botany> A genus of aromatic labiate plants, including the sweet marjoram (O. Marjorana) and the wild marjoram (O. Vulgare). Origin: L. Origanum, Gr, prob. Fr. Mountain + brightness, beauty. Cf. Organy. Source: Websters Dictionary (01 Mar 1998) |
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| origanum oil | The volatile oil (which contains carvacrol) obtained from various species of Origanum (family Labiatae); used as a rubefacient, as a constituent in veterinary liniments, and in microscopic techniques. (05 Mar 2000) |