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.
Meridiem is the Latin for midday. Ante is the Latin for before. Post is the Latin for after.   a.m. is the abbreviation of the Latin phrase ante meridiem-and means befo â¦ re midday. p.m. is the abbreviation of the Latin phrase post meridiem-and means after midday.  Because we use a 12 hour clock we need to be able to distinguish which part of the day we mean when we say 8 o'clock.I don't want to hang around for 12 hours wiating for the 8:00 bus. 4 people found this useful.M is an abbreviation ante meridiem which means before noon in Latin. PM is an abbreviation for post meridiem which means after noon in Latin.