What Does AM and PM stands for, Full Form, meaning and definition

Are you ever confused about what time it is? You might say “It’s 12:00 PM,” but what does that mean? AM and PM are abbreviations for “ante meridiem” and “post meridiem,” which mean “before noon” and “after noon” in Latin.

The Full Form of AM and PM: Ante Meridiem (AM) and Post Meridiem (PM)

AM and PM stand for Ante Meridiem (AM) and Post Meridiem (PM) respectively. The terms “ante meridiem” (a.m.) and “post meridiem” (p.m.) are used to refer to the time before and after noon, respectively. In Latin, these terms literally mean “before midday” and “after midday.”

AM and PM both terms are used for time. there are 24 hours in 1 day. These 24 hours are divided into two parts 12 – 12 hours. The first part is from 12 midnight to 12 noon and the second part is from 12 noon to 12 midnight

AcronymsAMPM
DefinitionAnte MeridiemPost Meridiem
Latin MeaningBefore MiddayAfter Midday
SchedulesFrom Midnight to NoonFrom Noon to Midnight
AM and Pm full form in clock

What is the meaning of AM in the clock?

AM means Ante Meridian. AM is a Latin word that represents Time From midnight (12:00) to noon (11:59). Which is made up of two words Ante and Meridiem, in which Ante means “before” and Meridiem means “afternoon”. 

For example: If your boss said to u that he will call u at 4 O’clock. it may be confusing that it is 4 O’clock in the Evening time or 6 O’clock in the Morning time. Thus, AM and PM help to define Morning or Evening time schedules. one more thing is that AM and PM are being used in Only a 12-hour clock system.

What is the meaning of PM in the clock?

PM means Post Meridian. PM Stands for Post Meridiem It is a also Latin word that represents Time from noon (12:00) to just before midnight (11:59). It is made up of two words Post and Meridiem, in which Post means “after” and Meridiem means “afternoon”.

When you ask “What is the meaning of AM and PM” then the answer is that Am Means midnight (12:00) to noon (11:59) and PM represents Time from noon (12:00) to just before midnight (11:59).

what is the meaning and full form of am and pm
what is the meaning and full form of am and pm

Concept and History of AM And PM

How did the concept of AM and PM come to be? The answer may surprise you that it all started with the Egyptians

The Egyptians are thought to be the first civilization to divide their day into two parts: daytime and nighttime. They did this by measuring the shadow cast by the sun on a sundial.

The length of the shadow would change throughout the day, so they could tell when the sun was highest in the sky ( midday) and when it was lowest (midnight).

From there, the Romans took the idea and ran with it. They divided their day into 12 hours, with the first hour starting at sunrise and the last hour ending at sunset. This system is thought to be the basis for the AM and PM systems that we use today.

Interestingly, the concept of AM and PM didn’t really become standardized until the early 20th century. Before that, people would use different terms to refer to the two parts of the day – “ante meridiem” and “post meridiem” being two of the most popular.

So there you have it – the history of AM and PM in a nutshell! Who would have thought that such a seemingly simple concept would have such an interesting backstory?

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