Definition of "OSA"

Initialism of obstructive sleep apnea.  examples

Initialism of osteosarcoma.  examples

Initialism of on-shelf availability.  examples

Initialism of Ontario Soccer Association.  examples

Initialism of Ontario Society of Artists.  examples

Initialism of Open Solutions Alliance.  examples

Initialism of Oregon Student Association.  examples

Initialism of Old South Arabian.  examples

Initialism of opposite-sex attracted.  examples