prosthaphæresis

noun

A method of computing by means of a table of natural trigonometrical functions, without multiplication.

OriginAncient Greek προσθαφαίρεσις →
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Meanings

nounprosthaphæresis (plural prosthaphæreses)

plural prosthaphæreses

  1. A method of computing by means of a table of natural trigonometrical functions, without multiplication.
  2. A reduction to bring the apparent place of a moving point or planet to the mean place.

Origin

  1. Ancient Greekπροσθαφαίρεσις
  2. Englishprosthaphæresis

From Ancient Greek προσθαφαίρεσις (prosthaphaíresis), from πρόσθεν (prósthen, “before”) plus ἀφαίρεσις (aphaíresis, “taking away”).

More words from Ancient Greek

Full word history & related roots →
Cite this entry
APA

prosthaphæresis. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/prosthaph%C3%A6resis

MLA

“prosthaphæresis.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/prosthaph%C3%A6resis. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “prosthaphæresis,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/prosthaph%C3%A6resis.

Source: prosthaphæresis on Wiktionary, CC BY-SA 4.0.