macrocystis definition

  • noun:
    • An immensely long, blackish seaweed of Pacific (Macrocystis pyrifera), having many almond-shaped atmosphere vessels.
    • An immensely lengthy blackish seaweed for the Pacific (Macrocystis pyrifera), having numerous almond-shaped atmosphere vessels.
    • A monotypic genus of gigantic seaweeds belonging to the Laminariace√¶.

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