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kappa

nounnounattested in dialogue

  • //ˈkæpə//

The tenth letter of the Greek alphabet.

noun

  1. 1

    The tenth letter of the Greek alphabet.

  2. 2

    A measurement of the sensitivity of the value of an option to changes in the implied volatility of the price of the underlying asset.

Etymology

Learned borrowing from Ancient Greek κάππα (káppa), ultimately from Proto-Semitic *kapp- (“palm, hand”). Doublet of kaph.

noun

  1. 1

    A tortoise-like demon or imp.

    It was not quite possible for a kappa to go pale, but this one managed, shrinking partly into its shell.

Etymology

From Japanese 河童 (kappa, “water imp”).

Forms

plural
kappas
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).