Symbol
There is no universally accepted symbol for the year as a unit of time. The International System of Units does not propose one. NIST SP811 and ISO 80000-3:2006 suggest the symbol a is taken from the Latin word annus. In English, the abbreviations y or yr are sometimes used, specifically in geology and paleontology, where kyr, myr, byr (thousands, millions, and billions of years, respectively) and similar abbreviations are used to denote intervals of time remote from the present.
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Famous quotes containing the word symbol:
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