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2 definitions found
 for Hour hand
From The Collaborative International Dictionary of English v.0.48 :

  Hour \Hour\, n. [OE. hour, our, hore, ure, OF. hore, ore, ure,
     F. heure, L. hora, fr. Gr. ?, orig., a definite space of
     time, fixed by natural laws; hence, a season, the time of the
     day, an hour. See Year, and cf. Horologe, Horoscope.]
     1. The twenty-fourth part of a day; sixty minutes.
        [1913 Webster]
  
     2. The time of the day, as expressed in hours and minutes,
        and indicated by a timepiece; as, what is the hour? At
        what hour shall we meet?
        [1913 Webster]
  
     3. Fixed or appointed time; conjuncture; a particular time or
        occasion; as, the hour of greatest peril; the man for the
        hour.
        [1913 Webster]
  
              Woman, . . . mine hour is not yet come. --John ii.
                                                    4.
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              This is your hour, and the power of darkness. --Luke
                                                    xxii. 53.
        [1913 Webster]
  
     4. pl. (R. C. Ch.) Certain prayers to be repeated at stated
        times of the day, as matins and vespers.
        [1913 Webster]
  
     5. A measure of distance traveled.
        [1913 Webster]
  
              Vilvoorden, three hours from Brussels. --J. P.
                                                    Peters.
        [1913 Webster]
  
     After hours, after the time appointed for one's regular
        labor.
  
     Canonical hours. See under Canonical.
  
     Hour angle (Astron.), the angle between the hour circle
        passing through a given body, and the meridian of a place.
        
  
     Hour circle. (Astron.)
        (a) Any circle of the sphere passing through the two poles
            of the equator; esp., one of the circles drawn on an
            artificial globe through the poles, and dividing the
            equator into spaces of 15[deg], or one hour, each.
        (b) A circle upon an equatorial telescope lying parallel
            to the plane of the earth's equator, and graduated in
            hours and subdivisions of hours of right ascension.
        (c) A small brass circle attached to the north pole of an
            artificial globe, and divided into twenty-four parts
            or hours. It is used to mark differences of time in
            working problems on the globe.
  
     Hour hand, the hand or index which shows the hour on a
        timepiece.
  
     Hour line.
        (a) (Astron.) A line indicating the hour.
        (b) (Dialing) A line on which the shadow falls at a given
            hour; the intersection of an hour circle which the
            face of the dial.
  
     Hour plate, the plate of a timepiece on which the hours are
        marked; the dial. --Locke.
  
     Sidereal hour, the twenty-fourth part of a sidereal day.
  
     Solar hour, the twenty-fourth part of a solar day.
  
     The small hours, the early hours of the morning, as one
        o'clock, two o'clock, etc.
  
     To keep good hours, to be regular in going to bed early.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  hour hand
      n 1: the shorter hand of a clock that points to the hours [syn:
           hour hand, little hand]

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