The quadratic residue is an important concept in number theory.

Quantum supremacy is a major milestone in the field of quantum computing.

The ocean quahog is a type of clam found in the North Atlantic Ocean.

The love quadrangle between John, Mary, Sarah, and David became more complicated as they all developed feelings for each other.

The wood quail is a small bird found in the forests of South America.

Quantum foams are a fascinating concept in theoretical physics.

I have four quadruple whole notes in my music sheet.

I need a quadruple whole note for this music piece.

A Pythagorean quadruple consists of four positive integers a, b, c, and d such that a^2 + b^2 + c^2 = d^2.

The quack-breeches were hanging on the clothesline.