perionychium Hear it!

perionychium Definition

perio·nych·ium (per′ē ə nik′ē əm)

noun pl. -·ia-ə

the epidermis forming the border around a fingernail or toenail

Etymology: ModL < Gr peri- (see peri-) + onych- < onyx, nail + ModL -ium (see -ium)