The Science of Living Things series demonstrates that Bobbie Kalman and her staff have turned out yet another informative and finely produced series of books. . . . this whole series would make a welcome addition to the elementary school library -- Kay Lehr, Fort Rouge School, Manitoba, Jan. 1999.
perpendicularity - the quality of being at right angles to a given line or plane (especially the plane of the horizon) oblongness, rectangularity - the property of being shaped like a rectangle.
Wiktionary(0.00 / 0 votes)Rate this definition: muscularity(Noun) musculature. The muscularity in his forearm was visible as he flexed his fingers. muscularity(Noun) The degree to which the muscles in a body part are developed.