trochlear notch

== English == === Noun === trochlear notch (plural trochlear notches) (anatomy) A deep depression in the proximal end of the ulna by which the ulna articulates with the trochlea of the humerus at the elbow. Synonyms: semilunar notch, sigmoid notch === References === “trochlear notch”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.