In-tĕn'sion, n.
(in-tĕn'shun), n. [Lat. intensio, Fr. & Sp. intension, It. intensione. See INTEND.]
Sense 1. A straining, stretching, or bending; the state of being strained; as, the intension of a musical string.
Sense 2. Increase of power or energy of any quality; — opposed to remission.
Sense 3. (Logic & Metaph.) The collective attributes, qualities, or marks that make up a complex general notion; the comprehension, content, or connotation; — opposed to extension, extent, or sphere.
This law is, that the intension of our knowledge is in the inverse ratio of its extension. Sir W. Hamilton.