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word | definition |

qibla | Qiblah (قبلة, also transliterated as Kiblah) is an Arabic word for the direction that should be faced when a Muslim prays during Salah. Most mosques contain a niche in a wall that indicates the qiblah. |

quadrennial | Occurring every four years. |

quaestor | Any of a number of officials who had charge of public revenue and expenditure. |

qualia | The elemental feelings and sensations making up conscious experience (seeing a face, hearing a tone, feeling angry). |

quant | Is a person who is mathematical by training or inclination and applies various numerical approaches in analyzing or trading securities or markets. |

quaternion | 1. Quaternions, in mathematics, are a non-commutative number system that extends the complex numbers. The quaternions were first described by Irish mathematician Sir William Rowan Hamilton in 1843 and applied to mechanics in three-dimensional space. 2. A group or set of four people or things; A four-dimensional hypercomplex number that consists of a real dimension and 3 imaginary ones (i, j, k) that are each a square root of -1. They are commonly used in vector mathematics and three-dimensional games. |

qubit | In quantum computing, a qubit or quantum bit is a unit of quantum informationâ€“the quantum analogue of the classical bitâ€“with additional dimensions associated to the quantum properties of a physical atom. |

quern | A simple hand mill for grinding grain, typically consisting of two circular stones, the upper of which is rotated or rubbed to and fro on the lower one. |

qui tam | In common law, a writ of qui tam is a writ whereby a private individual who assists a prosecution can receive all or part of any penalty imposed. |

quidditch | A fictional Wizarding sport played in the Harry Potter book series. |

quidnunc | From the Latin words quid nunc "what now," meaning "what's the news," refers to someone who attempts to know all that happens, but who is not careful of the facts. A gossip. |

quince | Small Asian tree with pinkish flowers and pear-shaped fruit; widely cultivated. |

quintessence | 1. The fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies. 2. The purest and most concentrated essence of something. 3. The most typical example or representative of a type. |

quire | 1. One-twentieth of a ream of paper; a collection of twenty-four or twenty-five sheets of paper of the same size and quality, unfolded or having a single fold. 2. A set of leaves which are stitched together. |

quoits | A game in which iron rings (or open iron rings) are thrown at a stake in the ground in the hope of encircling it. |

quondam | That formerly was or existed; former. |