Navigational IQ (noun): The innate ability for a swimmer to swim the straightest and fastest path in the open water. She has the highest navigational IQ among all the competitors. [Origin: 1520–30; < L nāvigātiōn- (s. of nāvigātiō) a voyage. See NAVIGATE, -ION ] + intelligence quotient]. Synonym: ability to swim straight.
Excerpt from the Open Water Swimming Dictionary (2009 English edition).
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