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A unit of angular distance equal to a 60th of a degree
Answer for the clue "A unit of angular distance equal to a 60th of a degree ", 9 letters:
arcminute
Word definitions for arcminute in dictionaries
WordNet
Word definitions in WordNet
n. a unit of angular distance equal to a 60th of a degree [syn: minute , minute of arc ]
Wiktionary
Word definitions in Wiktionary
n. A unit of angle; 1/60th of a degree.
Usage examples of arcminute.
Whereas Ptolemy's star positions were accurate to about 10 arcminutes, Tycho's were accurate to 1 arcminute, the width of a basketball as seen from a kilometer away.
Tycho's observations were generally accurate to 1 arcminute, but Kepler was willing to overlook that.
Alas, two of the observations were off from predictions by as much as 8 arcminutes.