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analog clock a clock that displays the time using a long hand to show the hour and a short hand to show the minutes.
anytime at any moment, hour, or day; whenever. [1/2 definitions]
blizzard in meteorology, a violent snowstorm characterized by high winds of no less than 35 miles (56 kilometers) per hour and lasting three hours or more. A blizzard results in extremely reduced visibility. [1/2 definitions]
circadian denoting or concerning behavioral or physiological activities that recur at about twenty-four-hour intervals, such as sleep rhythms.
Circadian rhythm the approximately 24-hour cycle apparent in plants and animals that regulates hormone production, cell regeneration, sleeping and feeding patterns, and the like. [1/2 definitions]
cuckoo clock a clock that conceals a mechanical bird that pops out of a little door to announce the hour with sounds resembling the cry of a cuckoo.
daylight-saving time standard time that has been advanced by one hour in a given time zone, usu. in the spring and lasting into the fall, in order to provide one more hour of daylight at the end of each day.
dogwatch either of two two-hour watches aboard ship that occur between four and eight P.M.
DST abbreviation of "daylight saving time," standard time that has been advanced by one hour in a given time zone, usu. in the spring and lasting into the fall, in order to provide one more hour of daylight at the end of each day.
gale a strong wind, esp. one of about thirty to sixty miles per hour. [1/2 definitions]
half-hour thirty minutes after any hour, or an interval of thirty minutes. [1/4 definitions]
hour the distance that can be traveled in one hour. [1/5 definitions]
hourglass an instrument that measures time by channeling a quantity of sand or mercury through a narrow opening between two larger glass bulbs in exactly one hour. [1/2 definitions]
hour hand the shorter hand on a watch or a clock, which moves around the entire face twice a day and indicates the hour.
hourlong lasting an hour.
hourly done or occurring every hour. [3/5 definitions]
hr. abbreviation of "hour" or "hours," a unit of time equal to sixty minutes.
hurricane a powerful cyclonic storm that originates in the West Indian region of the Atlantic Ocean or in the eastern part of the Pacific Ocean near Mexico and Central America. A hurricane is characterized by heavy rains along with winds exceeding 73 miles, or 119 kilometers, per hour.
intransitive verb a verb that is not followed by a direct object. In the sentence, "I ran for an hour," "ran" is an intransitive verb.
kilowatt-hour a unit of electrical energy equal to one kilowatt operating for one hour. (abbr.: kwh, kWh)
knot1 one nautical mile, or about 6,080 feet, per hour. [1/14 definitions]