quad-

prefix

Involving four elements.

“un- (“1”) + bi- (“2”) + quad- (“4”) + -ium (element suffix) → unbiquadium (“element 124”)”

OriginLatin quattuor →
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Meanings

prefix
  1. Involving four elements.
  2. chemistryUsed for the digit four to form systematic element names of elements whose existence has been predicted, and which have not yet been given a trivial name.

    un- (“1”) + bi- (“2”) + quad- (“4”) + -ium (element suffix) → unbiquadium (“element 124”)

Origin

  1. Latinquattuor“four”
  2. Englishquad-

Reduced form of quadri-, from Latin quattuor (“four”).

More words from Latin

Full word history & related roots →
Cite this entry
APA

quad-. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/quad-

MLA

“quad-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/quad-. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “quad-,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/quad-.

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