nigrities linguae

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nigrities lin´guae black tongue.

black tongue

1. in canines, a disorder associated with a deficency of nicotinic acid.
2. black to yellowish-brown discoloration of the dorsum of the tongue due to staining by exogenous material such as the components of tobacco; usually superimposed on hairy tongue.

nigrities linguae

A black pigmentation of the tongue.
See also: nigrities