| quality control |
a system by which to maintain a desired standard of quality in a product or process. |
| qualm |
a feeling of guilt, doubt, or misgiving. [2 definitions] |
| quandary |
a situation of uncertainty, puzzlement, or hesitation; dilemma. |
| quanta |
pl. of quantum. |
| 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. |
| quarry1 |
a large open hole or pit dug for mining stone, marble, gravel, or the like. [3 definitions] |