A form of roller hockey played on four-wheeled roller skates.

A roller skate with four wheels, two either side of the foot.

(algebraic number theory) A number field that is an extension field of degree two over the rational numbers.

(medicine, usually plural only) Rough divisions of the abdominal cavity formed by placing the umbilicus at the center of the horizontal and vertical dividing lines.

quadrille paper

(quantum mechanics) A momentary fluctuation in the energy at a point in space due to the Heisenberg uncertainty principle

(physics) A normalized linear combination of an "up" state and a "down" state for, say, the spin of an electron.

Information theory adapted to deal with information held and/or handled by quantum systems, i.e., in which information is measured in qubits instead of classical bits.

(logic, quantum mechanics) A form of non-classical logic which has been abstracted out of quantum mechanics.

Alternative form of pseudoquantitative