Definition of seaweed
1 : a mass or growth of marine plants
2 : a plant growing in the sea; especially : a marine alga (such as a kelp)
Recent Examples of seaweed from the Web
Toyota is looking to a greener future — literally — with dreams of an ultralight, superefficient plug-in hybrid with a bioplastic body made of seaweed that could be in showrooms within 15 years.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'seaweed'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of seaweed
SEAWEED Defined for English Language Learners
Definition of seaweed for English Language Learners
: a type of plant that grows in the sea
SEAWEED Defined for Kids
Definition of seaweed for Students
: an alga (as a kelp) that grows in the sea
Seen and Heard
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