·noun Increase of power or energy of any quality or thing; intenseness; fervency.
II. Intension ·noun A straining, stretching, or bending; the state of being strained; as, the intension of a musical string.
III. Intension ·noun The collective attributes, qualities, or marks that make up a complex general notion; the comprehension, content, or connotation;
— opposed to extension, extent, or sphere.