Resembling or relating to seaweed of the order Fucales, especially brown algae and rockweeds.
From Latin fucus (seaweed) with Greek suffix -oid (resembling). The suffix -oid was popularized in scientific nomenclature during the 18th and 19th centuries to describe similar forms.
Fucoid is the adjective form that scientists use when describing anything that looks like or belongs to the Fucus family of seaweeds, which makes 'fucoid beds' a real term for underwater forests that are some of Earth's most productive ecosystems.
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