Princeton's WordNet
erbium, Er, atomic number 68noun
a trivalent metallic element of the rare earth group; occurs with yttrium
Synonyms:
atomic number 68, emergency room, erbiumemergency room, ERnoun
a room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment
Synonyms:
atomic number 68, emergency room, erbium
PPDB, the paraphrase database
List of paraphrases:
uh, um, rfe, re, eh, emergencies, e.r.k., e.r., efr, sos, roe
Concise Medical Dictionary, by Joseph C Segen, MD
ER
Synonyms:
Oestrogen receptor
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