Thalarctos

Từ điển WordNet v3.1 - WordNet Dictionary

noun

polar bears;
in some classifications not a separate genus from Ursus
• Syn:
genus Thalarctos
• Hypernyms:
mammal genus
• Member Holonyms:
Ursidae, family Ursidae
• Member Meronyms:
ice bear, polar bear, Ursus Maritimus, Thalarctos maritimus