what is the full form of "am" and "pm" used in denoting time? and what is the full form of AD and BC for years

Answer 1

It's Latin. Ante means before, post means after, and meridian refers to noon. Ante Meridian is am, Post Meridiam is pm. AD is also from the Latin Anno Domini(check my Latin, I sucked at declining) meaning The Year of Our Lord and BC just means before Christ.

Answer 2

Am Pm Full Form

Answer 3

AM AND PM:

The 12-hour clock is a timekeeping convention in which the 24 hours of the day are divided into two periods called ante meridiem (a.m., from Latin, literally "before midday") and post meridiem (p.m., "after midday"). Each period consists of 12 hours numbered 12 (acting as a zero), 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11. The a.m. period runs from midnight to noon, while the p.m. period runs from noon to midnight. The most common convention is to assign 12 a.m. to midnight and 12 p.m. to noon, defining both half days to have a closed (inclusive) beginning and open (exclusive) end; however, "12 noon" and midnight more clearly and correctly express these times.

The 12-hour clock originated in Egypt. However, the lengths of their hours varied seasonally, always with 12 hours from sunrise to sunset and 12 hours from sunset to sunrise, the hour beginning and ending each half-day (four hours each day) being a twilight hour. An Egyptian sundial for daylight use[1] and an Egyptian water clock for nighttime use found in the tomb of Pharaoh Amenhotep I,[2] both dating to c. 1500 BC, divided these periods into twelve hours each. The Romans also used a twelve-hour clock: the day was divided into twelve equal hours (of, thus, varying length throughout the year) and the night was divided into three watches.

BC AND AD:

Anno Domini (Latin: "In the Year of the Lord"), abbreviated as AD, defines an epoch based on the traditionally-reckoned year of the birth of Jesus of Nazareth. Similarly, Before Christ (from the Ancient Greek "Christos" or "Anointed One", referring to Jesus), abbreviated as BC, is used in the English language to denote years before the start of this epoch. Some non-Christians use the abbreviations AD and BC without intending to acknowledge the Christian connotation. Some people prefer the alternatives 'CE' and 'BCE', arguing that they are more neutral terms (see below).

The designation is used to number years in the Christian Era, conventionally used with the Julian and Gregorian calendars. More descriptively, years may be also specified as 'Anno Domini Nostri Iesu Christi' ('In the Year of Our Lord Jesus Christ'). 'Anno Domini' dating was first adopted in Western Europe, during the eighth century.

The numbering of years per the Christian era is currently dominant in many places around the world, in both commercial and scientific use. For decades, it has been the global standard, recognized by international institutions such as the United Nations and the Universal Postal Union. This is due to the prevalence of Christianity in the Western world, the great influence of the Western world on science, technology and commerce, as well as the fact that the solar Gregorian calendar has, for a long time, been considered to be astronomically correct.[1]

English copies Latin usage by placing the abbreviation 'before' the year number for AD, but after the year number for BC; for example: 64 BC, but AD 2006.

Answer 4

AM: ante meridian
PM: post meridian
AD: Anno Domini (year of the Lord)
BC: Before Christ

Answer 5

No, AD does NOT mean "After Death." It means "Ano Domini" (I think I spelled that wrong)

PM = Post Meridian
AM = Ante Meridian

At least Kay got the BC right.

Answer 6

AD is the calendar calculated in ancient times that is as After the death of jesuc christ is called as AD.
BC the years befor the period of christ is said to be as BC.

Answer 7

ante meridian and post meridian, meaning before and after noon, respectively. Anno Domini ("in the year of our Lord") and Before Christ. Some people now use BCE (before the common era).

Answer 8

I think an addition of 32 years or so is required between BC and AD ,
to the elaborate answer of "Guudkarma "

Answer 9

AD-Anno Domini-it means the year of birth of LORD.
BC-Before Christ-it means before the birth of JESUS.
AM-Antte Merridean-it means before noon.
PM-Post Merridean-it means after noon & not afternoon.
All these are LATIN.

Answer 10

AM (not am) = Anti meridian (or before noon)
PM ( not pm) = Post Meridian ( or after noon)
AD = After death ( of Jesus Christ)
BC = Before Christ