has part has part characteristic of inheres in has modifier Smooth tongue 2009-07-12T11:58:17Z UMLS:C0155964 Smooth lingual surface Atrophy of lingual surface HP:0010298 Glossy appearance of the entire tongue surface. Smooth dorsum of tongue SNOMEDCT_US:9491003 UMLS:C4280381 UMLS:C4280382 This is due to reduction in number and/or size of the filiform papillae. A geographic tongue has localized areas of smoothening, but not sufficient to warrant use of the term Smooth tongue. UMLS:C4280383 Smooth tongue Atrophy of tongue surface Smooth surface of tongue Atrophy of dorsum of tongue Abnormal tongue morphology abnormal smooth tongue