endotrachealPronunciation: /ˌɛndə(ʊ)ˈtreɪkɪəl, -trəˈkiːəl/Definition of endotracheal adjective Anatomy situated or occurring within or performed by way of the trachea: an endotracheal tubeDerivatives endotracheally adverb endotracheal in other Oxford dictionaries Definition of endotracheal in the US English dictionary