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megayear. In DICTIOUS you will not only get to know all the dictionary meanings for the word
megayear, but we will also tell you about its etymology, its characteristics and you will know how to say
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English
Etymology
mega- + year
Noun
megayear (plural megayears) (abbreviated as: Myr)
- A million years, a thousand thousand years.
1984, J. B. Cadwallader-Cohen, W. W. Zysiczk, R. B. Donnelly, “The chaostron: an important advance in learning machines”, in Communications of the ACM, 27(4), p.357:After three hours the machine had not printed its response to the first input pattern; evidently the rate of learning under these conditions is very low (we judge it to be on the order of 10-6 concepts for megayear).
1997, Ian Lerche, Geological Risk and Uncertainty in Oil Exploration, page 231:We know from isotopic measurements, stereochemistry, and gas chromatography/mass spectrometry, that the production of hydrocarbons in the Earth occurs on timescales ranging from fractions of a megayear to hundreds of megayears, in a temperature regime in the rough range of 0-200°C, and in an evolving environmental "smog" of sedimentary pores containing water laced with varying amounts of ions, molecules, and minerals.
2001, Fred Howard, Taming the Vipers in the Slough, page 400:As to that time span, all clearly definite forms of life or species seem to take a megayear more or less to come about and be present for a while.
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