plural of quality-adjusted life year

(quantum mechanics) A framework for describing the nuclear many-body problem as a relativistic system of baryons and mesons based on a local, Lorentz-invariant lagrangian density.

(idiomatic) A person or thing whose nature or value is a mystery. / Used other than figuratively or idiomatically: see unknown, quantity.

The next bluff in sequence after a double bluff and a triple bluff

To perform a quadruple bluff

plural of quadratic function

plural of quantum Hall effect

Alternative spelling of buttonquail

(economics) A monetary policy in which the central bank increases the money supply in the banking system, as by purchasing bonds from banks.

plural of quadruple star system