Definition of 'ER'

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Definitions of 'ER'

1. (noun) erbium, Er, atomic number 68
a trivalent metallic element of the rare earth group; occurs with yttrium

2. (noun) emergency room, ER
a room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment

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'ER' - Nearby Entries
ergotrate maleate ergotropic ergotropism er erianthus erianthus ravennae erica arborea

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