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quadr-, quadri-, quadru-

The combining form quadr-, quadri- or quadru- has two meanings:

Meaning 1: four, fourth

  • The students strolled across the quadrangle to their residence.
  • This exercise strengthens your quadriceps, a group of four muscles.
  • The city of Québec celebrated its quadricentennial in 2008.
  • Quadrupeds are four-footed animals.

Meaning 2: square

  • In a quadratic equation, the variable is squared.