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Definition of 'tongue depressor'. tongue depressor (tÊÅ dÉªprÉsÉr ) Word forms: tongue depressors. countable noun. A tongue depressor is a medical instrument that is used to press a patient's tongue down so that their mouth or throat can be examined more easily. [medicine] Dr. Avery took the tongue depressor out of Rae's mouth.
The tongue is a mass of muscle that is almost completely covered by a mucous membrane. It occupies most of the oral cavity and oropharynx. It is known for its role in taste, but it also assists with mastication (chewing), deglutition (swallowing), articulation (speech), and oral cleansing.