focaloid

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noun

A shell bounded by two concentric, confocal ellipses (in two dimensions) or ellipsoids (in three dimensions).

Scrabble 14
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Meanings

nounfocaloid (plural focaloids)

plural focaloids

  1. geometryA shell bounded by two concentric, confocal ellipses (in two dimensions) or ellipsoids (in three dimensions).
Cite this entry
APA

focaloid. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/focaloid

MLA

“focaloid.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/focaloid. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “focaloid,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/focaloid.

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