Noon is defined as 12:00 o'clock in the afternoon.(noun)
The scheduled time for a lunch break at 12:00 is an example of noon.
See noon in Webster's New World College Dictionary
Origin: ME < OE non, orig., the ninth hour (by the Roman method, reckoning from sunrise: i.e., 3 p.m.) < L nona (hora), ninth (hour) < novem, nine
See noon in American Heritage Dictionary 4
Origin: Middle English non
Origin: , from Old English nōn, canonical hour of nones (3 P.M. in early Middle Ages)
Origin: , from Late Latin nōna (hōra), ninth (hour after sunrise), nones
Origin: , feminine sing. of Latin nōnus, ninth; see newṇ in Indo-European roots.
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