Fucaceae fu·ca·ceae uncommon noun 1. small family of brown algae: gulfweeds; rockweeds Synonymsfamily Fucaceae Related words Broader terms protoctist family Parts Fucales Part of fucoidrockweedgenus FucusAscophyllumgenus Sargassum WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
