1. Er [ Synonyms: atomic number 68, erbium] | |
A trivalent metallic element of the rare earth group; occurs with yttrium
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2. Er [ Synonyms: emergency room] | |
A room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment
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Fertilizer Distributor and Shop Software The software is designed for a business dealing in fertilizers. Purcha ... Read more