† muscuˈlosityObs. [f. L. mūsculōs-us(see next) + -ity.] The state of being musculous. 1601Holland Pliny II. 109 They have..only a certaine musculositie at the ends..of their branches, much like to the tender buds of Asparagus.1721Bailey, Musculosity, bigness of muscles.1864in Webster; and in later Dicts.