1 definition by Diane789

Top Definition
A birth defect, in which one or both nasal passages are blocked off, making it difficult or imposible to breathe through the nose.
He has choanal atresia: bone or skin blocking his nasal passages from his airway.
by Diane789 June 28, 2010

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug