[TA] the triangle bounded by the sternocleidomastoid muscle, the superior belly of the omohyoid muscle, and the anterior midline of the neck; the infrahyoid muscles occupy most of it. SYN: trigonum musculare (regionis cervicalis anterioris) [TA], omotracheal triangle*, trigonum omotracheale*, inferior carotid triangle, tracheal triangle.
