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onychophagia

[ on-i-koh-fey-juh, -jee-uh ]
/ ˌɒn ɪ koʊˈfeɪ dʒə, -dʒi ə /
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noun Psychiatry.

the practice of biting one's nails, especially when done habitually and as a symptom of emotional disturbance.

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Origin of onychophagia

1895–1900; <Greek onycho- (combining form of ónyx nail, claw; see onyx) + -phagia
on·y·choph·a·gist [on-uh-kof-uh-jist], /ˌɒn əˈkɒf ə dʒɪst/, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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