Myr

Information about Myr

MYR can mean multiple things:

Malaysian ringgit, the ISO 4217 code for the currency of Malaysia
Myrtle Beach International Airport, the IATA airport code for the airport in Myrtle Beach, South Carolina

This article is about the unit of time. For the Magic: the Gathering creatures, see .

myr was formerly used in English-language geology and astronomy as a unit of one million years. It is an abbreviation for 'million years' and lower case is usually used.

In English-language technical literature in these fields, the term 'My' is preferred, as this conforms to SI standards. "M" denotes Million (10⁶), and "y" can denote years. Note that "my" would technically imply a milli-year, a period of a thousandth of a year or about 8 hours.

The correct SI usage is Ma, or Megaannum which unambiguously denotes a duration of 10⁶ years. To denote a date one would add ago or bp to denote before present.

In non-SI usage, Ma was used to denote a specific number of millions of years ago, but it was not properly used to describe a duration, so: the Cretaceous started 145 Ma and ended 65 Ma, but it lasted for 80 myr (or 80 My). More often, the term "mya" (million years ago) is used in these contexts.

An IATA airport code, also known an IATA location identifier, IATA station code or simply a location identifier [1] , is a three-letter code designating many airports around the world, defined by the International Air Transport Association (IATA).
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Myrtle Beach, South Carolina

Flag
Location of Myrtle Beach in
South Carolina
Coordinates:
Country United States
State South Carolina
County Horry

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English}}}
Writing system: Latin (English variant)
Official status
Official language of: 53 countries
Regulated by: no official regulation
Language codes
ISO 639-1: en
ISO 639-2: eng
ISO 639-3: eng
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Oceanic crust 0-20 Ma
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Astronomy is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth's atmosphere (such as the cosmic background radiation).
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units of measurement have played a crucial role in human endeavour from early ages up to this day. Disparate systems of measurement used to be very common. Now there is a global standard, the International System (SI) of units, the modern form of the metric system.
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million (1,000,000), or one thousand thousand, is the natural number following 999,999 and preceding 1,000,001.

In scientific notation, it is written as 10⁶^[1]
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A year (from Old English gēr) is the time between two recurrences of an event related to the orbit of the Earth around the Sun. By extension, this can be applied to any planet: for example, a "Martian year" is the time in which Mars completes its own orbit.
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Si, si, or SI may refer to (all SI unless otherwise stated):

In language:

One of two Italian words:
sì (accented) for "yes"
si

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Si, si, or SI may refer to (all SI unless otherwise stated):

In language:

One of two Italian words:
sì (accented) for "yes"
si

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Annum is a Latin noun meaning year. It is the accusative singular of the second declension masculine noun annus (nominative), anni (genitive) [1] .

As a unit of time, it is defined as exactly 365.
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Byr was formerly used in English-language geology and astronomy as a unit of one billion years. The "B" is an abbreviation for "billion" (meaning thousand million), with "yr" simply an abbreviation for "year".
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kyr was formerly used in some English-language geology and astronomy works as a unit of one thousand years or millennium. The "k" is the SI prefix for kilo or thousand, mixed with the non-SI suffix "yr" simply an abbreviation for "year".
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Myr

Information about Myr

See also