Gossypium gos·sy·pium uncommon noun 1. herbs and shrubs and small trees: cotton Synonymsgenus Gossypium Related words Word family Gossypium arboreumGossypium barbadenseGossypium herbaceumGossypium hirsutumGossypium peruvianumGossypium thurberi Broader terms dilleniid dicot genus Parts Malvaceae Part of cotton WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.