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[meg-uh-theer] /ˈmɛg əˌθɪər/

any of the huge, slothlike animals of the extinct genus Megatherium, or closely related genera, that lived from the Oligocene to the Pleistocene epochs.
any of various gigantic extinct American sloths of the genus Megatherium and related genera, common in late Cenozoic times


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  • Megatherium

    megatherium (měg’ə-thîr’ē-əm) Plural megatheriums or megatheria A large, extinct ground sloth of the genus Megatherium that lived from the Miocene through the Pleistocene Epochs, primarily in South America. It was as large as an elephant, had long curved claws and teeth only in the sides of its jaws, and ate plants. The megatherium was more […]

  • Megaton

    [meg-uh-tuhn] /ˈmɛg əˌtʌn/ noun 1. one million . 2. an explosive force equal to that of one million of TNT, as that of atomic or hydrogen bombs. Abbreviation: MT. /ˈmɛɡəˌtʌn/ noun 1. one million tons 2. an explosive power, esp of a nuclear weapon, equal to the power of one million tons of TNT mt […]

  • Megatherm

    [meg-uh-thurm] /ˈmɛg əˌθɜrm/ noun 1. a plant requiring a constant high temperature and abundant moisture for growth.

  • Megadose

    [meg-uh-dohs] /ˈmɛg əˌdoʊs/ noun 1. a many times the usual amount, as of a vitamin or drug. /ˈmɛɡəˌdəʊs/ noun 1. a very large dose, as of a medicine, vitamin, etc megadose meg·a·dose (měg’ə-dōs’) n. An exceptionally large dose, as of a drug or vitamin.

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