Definitions for halitosisˌhæl ɪˈtoʊ sɪs
Random House Webster's College Dictionary
hal•i•to•sisˌhæl ɪˈtoʊ sɪs(n.)
a condition of having offensive-smelling breath; bad breath.
Origin of halitosis:
1870–75; < L hali(tus) breath (hāl(āre) to breathe, exhale+-itus suffix of v. action +-osis
The condition of having stale or foul-smelling breath.
U.S. National Library of Medicine
An offensive, foul breath odor resulting from a variety of causes such as poor oral hygiene, dental or oral infections, or the ingestion of certain foods.