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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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hum, uh oh, uh-huh, uh-uh, hm, hrm, unh-unh, unh-uh, hmph, hmmf, um, umm, er, let me see, let's see | an expression that is uttered to signal a pause in speech while thinking | ||
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erbium, Er, atomic number 68 | a trivalent metallic element of the rare earth group; occurs with yttrium |