An area that is dangerous and where people or vessels may disappear. / A set of three things considered dangerous.

A region of the Pacific Ocean, settled by Polynesians, that is roughly triangular, extending from vertexes approximately at New Zealand, Easter Island, Hawaii. This is sometimes used to define the region of Polynesia.

plural of combustion triangle

plural of fire triangle

(anatomy) A triangular region that is a landmark in the neck, has its apex above at the occipital bone, and is bounded in front by the sternocleidomastoid muscle, behind by the anterior margin of the trapezius, and inferiorly by the middle third of the clavicle.

(anatomy) A space in each lateral half of the neck that is bounded in back by the sternocleidomastoid muscle, below by the omohyoid muscle, and above by the stylohyoid and digastric muscles.

Synonym of Devil's Sea

(anatomy) An area located in the superficial paraseptal endocardium of the right atrium.

(anatomy) A triangular region that is a landmark in the neck, has its apex at the sternum pointing downward, and is bounded in front by the anterior midline of the neck, behind by the anterior margin of the sternocleidomastoid muscle, and above by the inferior margin of the lower jaw.

(anatomy) An anatomical space in the superior and medial aspect of the anterior thigh, bounded superiorly by the inguinal ligament, laterally by the sartorius muscle, and medially by the adductor longus muscle.