Intension (?), n. [L. intensio: cf. F. intension. See Intend, and cf. Intention.]
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1. A straining, stretching, or bending; the state of being strained; as, the intension of a musical string.
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2. Increase of power or energy of any quality or thing; intenseness; fervency. Jer. Taylor.
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Sounds . . . likewise do rise and fall with the intension or remission of the wind. Bacon.
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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.
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This law is, that the intension of our knowledge is in the inverse ratio of its extension. Sir W. Hamilton.
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