milliradian

Noun
  1. A unit of angular distance equal to one thousandth of a radian (synset 113633127)
    is a type of: angular unit - a unit of measurement for angles
    has: microradian - a unit of angular distance equal to one thousandth of a milliradian
    is a part of: rad, radian - the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)

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