A quadrupole time-of-flight mass spectrometer.

plural of q-analogue

(mathematics) A generalization of a theorem, identity or expression that involves a new parameter q that returns the original theorem, identity or expression in the limit as q → 1. They have applications in the study of fractals and the entropy of chaotic dynamical systems.

plural of q-analog

An infectious disease, resembling influenza, caused by the bacterium Coxiella burnetii (previously classified as Rickettsia burnetii).

A measure of the communicative utility of a human language, computed as the product of the language's centrality and its prevalence.

plural of Q-value

(informal) Alternative spelling of barbecue

Alternative form of John Q. Public

Alternative form of QED (“some fact or scenario that proves an argument or proposition”)