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Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Abbreviation of arctangent.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the inverse function of the tangent; the angle that has a tangent equal to a given number

Etymologies

arc- +‎ tan (Wiktionary)

Examples

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