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.
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