quantifiable |
capable of being measured or counted, or of being conceived in terms of amount. |

quantify |
to find or express the quantity of. |

quantitative |
of, concerning, or capable of being measured or expressed as, a quantity. [2 definitions] |

quantitative analysis |
the chemical analysis of a compound or mixture to determine by exact measurement the amounts and percentages of its constituents. |

quantity |
amount or number. [6 definitions] |

quantization |
in mathematics, the process of converting a continuous set of values into a discrete set. |

quantum |
an irreducible quantity of energy, such as a photon of light. [3 definitions] |

quantum bit |
a fundamental unit of information in quantum computing that is equivalent to the binary bit used in traditional computing; qubit. Whereas the binary bit can only exist in two states (0 or 1), the quantum bit can exist in three states (0, 1, or 0 and 1 simultaneously). |

quantum jump |
a sudden change in the energy level of an atom or molecule. [2 definitions] |

quantum mechanics |
(used with a sing. or pl. verb) a theory in physics describing the motion of objects in terms of the principles of quantum theory. |

quantum theory |
a theory in physics that energy radiates or is absorbed in discontinuous quantities, each a multiple of indivisible units or quanta. |

quarantine |
the enforced separation of people, animals, goods, or the like from others, so as to prevent the spread of contagious illness. [4 definitions] |

quark |
any of several elementary particles believed to be components of protons, neutrons, and related particles. |

quarrel |
an angry or bitter disagreement or argument. [4 definitions] |

quarrelsome |
tending to quarrel easily or frequently; bad-tempered; argumentative. |

quarrier |
one who quarries stone. |

quarry^{1} |
a large open hole or pit dug for mining stone, marble, gravel, or the like. [3 definitions] |

quarry^{2} |
an animal hunted for food or sport. [2 definitions] |

quarry^{3} |
something that is in the shape of a square or diamond, esp. a tile or small windowpane. |

quarryman |
see "quarrier." |

quart |
in the US, a unit of capacity equal to two pints or 0.9464 liter in liquid measure and two pints or 1.101 liters in dry measure. (abbr.: qt.) [3 definitions] |