Definition/Meaning | Word/Phrase |
---|---|

oral sex, reciprocal | 69 , sixty-nine |

material's capacity to conduct electricity; measured as the reciprocal of electrical resistance | conductance |

reciprocal relation between two or more things | correlation , correlativity |

relationship, reciprocal | correlation , mutuality , reciprocity |

unit of elastance equal to the reciprocal of a farad | daraf |

unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists | diopter , dioptre |

reciprocal of capacitance | elastance , elastance unit , electrical elastance |

reciprocal transfer of equivalent sums of money especially the currencies of different countries | exchange , interchange |

reciprocal group action | getting even , paying back , return |

mean of n numbers expressed as the reciprocal of the arithmetic mean of the reciprocals of the numbers | harmonic mean |

(cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the reciprocal of the Hubble constant is the age of the universe | Hubble's constant , Hubble constant |

mutual or reciprocal action; interacting | interaction |

reciprocal relation between interdependent entities (objects or individuals or groups) | interdependence , interdependency , mutuality |

reciprocal action and reaction | interplay |

reciprocal reflection between two reflecting surfaces | interreflection |

mutual or reciprocal relation or relatedness | interrelatedness , interrelation , interrelationship |

unit of conductance equal to the reciprocal of an ohm | mho , reciprocal ohm , S , siemens |

(mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2; the multiplicative inverse of 7 is 1/7 | multiplicative inverse , reciprocal |

(from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic | pH , pH scale |

radius of the circle of curvature; the absolute value of the reciprocal of the curvature of a curve at a given point | radius of curvature |

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