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Definition of Underbite
1. Noun. A malocclusion, in which the lower teeth extend past the upper ones ¹
¹ Source: wiktionary.com
Definition of Underbite
1. [n -S]
Medical Definition of Underbite
1. A nontechnical term applied to mandibular underdevelopment or to excessive maxillary development. (05 Mar 2000)