Astronomy Answers
From the Astronomical Dictionary

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The description of the word you requested from the astronomical dictionary is given below.

the arcminute

arcminute, plural arcminutes; arcus = [Latin] arch, minutus = [Latin] made small

An arcminute or minute of arc is a unit of angle. An arcminute is the 60th part of a degree. An arcminute is further divided into 60 arcseconds.