'Macrocystis' definitions:
Definition of 'Macrocystis'
From: GCIDE
- Macrocystis \Mac`ro*cys"tis\, n. [NL. See Macro-, and Cyst.] (Bot.) An immensely long blackish seaweed of the Pacific (Macrocystis pyrifera), having numerous almond-shaped air vessels. [1913 Webster]