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Theta (medicine)


theta


A letter of the Greek alphabet corresponding to th in English; sometimes called the unlucky letter, from being used by the judges on their ballots in passing condemnation on a prisoner, it being the first letter of the Greek qanatos, death.

<mathematics> Theta function, one of a group of functions used in developing the properties of elliptic functions.

Origin: L, fr. Gr. Qh^ta, the Greek letter <theta/, <THETA/.

Source: Websters Dictionary