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Webster 1913 Edition

Noun.

The state or quality of being intense; intensity;

as, the

intenseness

of heat or cold; the

intenseness

of study or thought.

Noun.

intens'ness. The state of being strained or stretched; intensity; as the intenseness of a cord.

The state of being raised or concentrated to a great degree; extreme violence; as the intenseness of heat or cold.

Extreme closeness; as the intenseness of study or thought.

intenseness ‎(countable and uncountable, plural intensenesses)