Properly, belonging to an order of alga: (Fucoideæ) which are blackish in color, and produce oöspores which are not fertilized until they have escaped from the conceptacle. The common rockweeds and the gulfweed (Sargassum) are fucoid in character.
source: Webster 1913
noun
a fossilized cast or impression of algae of the order Fucales
source: WordNet 3.0
any of various algae of the family Fucaceae
source: WordNet 3.0
A plant, whether recent or fossil, which resembles a seaweed. See Fucoid, a.
