Heloderma horridum he·lo·der·mahorridum uncommon noun 1. lizard with black and yellowish beadlike scales; of western Mexico Synonymsbeaded lizardMexican beaded lizardHeloderma horridum Related words Broader terms venomous lizard Parts Heloderma WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
