Welted definition, a ridge or wale on the surface of the body, as from a blow of a stick or whip. See more.
AM stands for âante meridiemâ, which means âbefore noonâ in Latin, while PM stands for âpost meridiemâ, which means âafter noonâ in Latin. 12-Hour Periods. Most clocks today are 12-hour clocks â they divide the 24 hours in a day into two 12-hour periods.
Ante meridiem is commonly denoted as AM, am, a.m. or A.M. while post meridiem is usually abbreviated to PM, pm, p.m. or P.M. Each hour during the day, except midnight and noon, is suffixed by am or pm to identify whether the hour being referred to is in the morning, afternoon or evening.