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Definition of Echinocactus
1. Noun. Any cactus of the genus Echinocactus; strongly ribbed and very spiny; southwestern United States to Brazil.
Exact synonyms: Barrel Cactus
Generic synonyms: Cactus
Group relationships: Genus Echinocactus
Specialized synonyms: Hedgehog Cactus, Echinocactus Grusonii, Golden Barrel Cactus
Generic synonyms: Cactus
Group relationships: Genus Echinocactus
Specialized synonyms: Hedgehog Cactus, Echinocactus Grusonii, Golden Barrel Cactus