Definition/Meaning | Word/Phrase |
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(astronomy) the equatorial coordinate specifying the angle, measured eastward along the celestial equator, from the vernal equinox to the intersection of the hour circle that passes through an object in the sky; usually expressed in hours and minutes and | celestial longitude , RA , right ascension |

one of two points of intersection of the Earth's axis and the celestial sphere | celestial pole , pole |

Latin cross with a ring surrounding the intersection | Celtic cross |

intersection or crossing of two tracts in the form of the letter X | chiasm , chiasma , decussation |

point of intersection by three or more lines | concurrence |

(geometry) a curve generated by the intersection of a plane and a circular cone | conic , conic section |

intersection of two streets | corner , street corner , turning point |

intersection of two lines | cross |

sharp side formed by the intersection of two surfaces of an object | edge |

closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it | ellipse , oval |

(geology) line determined by the intersection of a geological fault and the earth's surface | fault line |

intersection of a railway and a road on the same level; barriers close road when trains pass | grade crossing , level crossing |

(shipbuilding) the point of intersection between two vertical lines, one line through the center of buoyancy of the hull of a ship in equilibrium and the other line through the center of buoyancy of the hull when the ship is inclined to one side; the dist | metacenter , metacentre |

point of intersection | node |

point of intersection of coordinate axes; where the values of the coordinates are all zero | origin |

triangle, intersection of three altitudes of | orthocenter |

plane curve formed by the intersection of a right circular cone and a plane parallel to an element of the curve | parabola |

control of traffic by a policeman stationed at an intersection | point duty |

policeman stationed at an intersection to direct traffic | pointsman |

angle formed at the intersection of the arcs of two great circles | spherical angle |

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