Entry 1 sense Webster, 1913 Musculature /mŭs'-kyəl-əch-ẽr/ · Mus·cu·la·ture · IPA /mˈʌskjələtʃər/ 01 n. The muscular system of an animal, or of any of its parts; musculation. 1. The muscular system of an animal, or of any of its parts; musculation.(Anat.)