genus Scleroderma ge·nussc·le·roderma uncommon noun 1. genus of poisonous fungi having hard-skinned fruiting bodies: false truffles SynonymsSclerodermagenus Scleroderma Related words Broader terms fungus genus Parts Sclerodermataceae Part of earthballScleroderma citrinumScleroderma flavidiumScleroderma bovista WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.