Dictionary

incisor

noun in·ci·sor \in-ˈsī-zər\

: a tooth that has a sharp edge for biting : one of the four front teeth of the upper or lower jaw

Full Definition of INCISOR

:  a front tooth typically adapted for cutting; especially :  one of the cutting teeth in mammals located between the canines when canines are present — see tooth illustration

First Known Use of INCISOR

1666

incisor

noun in·ci·sor \in-ˈsī-zər\   (Medical Dictionary)

Medical Definition of INCISOR

:  a front tooth adapted for cutting; especially :  any of the eight cutting human teeth that are located between the canines with four in the lower and four in the upper jaw

Illustration of INCISOR

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