er
Noun
-
A trivalent metallic element of the rare earth group;
Occurs with yttrium (synset 114661166)hypernym: metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.substance meronym:- fergusonite - a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals
- gadolinite, ytterbite - a mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium
synonym: atomic number 68, erbium -
A room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment (synset 103288132)
hypernym: hospital room - a room in a hospital for the care of patientssynonym: emergency room
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