Definition of "hour" []

• One of the 24 equal parts of a day. (noun)
• One of the points on a timepiece marking off 12 or 24 successive intervals of 60 minutes, from midnight to noon and noon to midnight or from midnight to midnight. (noun)
• The time of day indicated by a 12-hour clock. (noun)
• The time of day determined on a 24-hour basis: 1730 hours is 5:30 P.M. (noun)
• A unit of measure of longitude or right ascension, equal to 15° or 1/24 of a great circle. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "You should do an hour of the show each time instead of just half hour*"
• "Peter and John went to the Temple (Acts iii. 1) _at the hour of prayer, being the ninth hour_."
• "In one hour the transformation was complete, and it was _in that hour_ that the child developed the outward signs of the"