"megayear" meaning in English

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      "form": "megayears",
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          "text": "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).",
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          "ref": "1997, Ian Lerche, Geological Risk and Uncertainty in Oil Exploration, page 231",
          "text": "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.",
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          "ref": "2001, Fred Howard, Taming the Vipers in the Slough, page 400",
          "text": "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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        "A million years, a thousand thousand years."
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      "related": [
        {
          "word": "kiloyear"
        },
        {
          "word": "gigayear"
        },
        {
          "word": "gigannum"
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          "word": "mega-annum"
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          "word": "millionennium"
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  "word": "megayear"
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          "text": "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).",
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          "text": "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.",
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        "A million years, a thousand thousand years."
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  "word": "megayear"
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