Definition of Er

1. Noun. A trivalent metallic element of the rare earth group; occurs with yttrium.

Exact synonyms: Atomic Number 68, Erbium
Generic synonyms: Metal, Metallic Element
Substance meronyms: Fergusonite, Gadolinite, Ytterbite



2. Noun. A room in a hospital or clinic staffed and equipped to provide emergency care to persons requiring immediate medical treatment.
Exact synonyms: Emergency Room
Generic synonyms: Hospital Room

Definition of Er

1. Abbreviation. (abbreviation of Elizabeth Regina Elizabeth Regina) ¹

2. Abbreviation. (baseball) The statistic "Earned Run"; a run that was scored without the aid of an error by the fielding team that is charged to the pitcher responsible for allowing the runner that scored to reach base. ¹

3. Abbreviation. (biology) (abbreviation of endoplasmic reticulum) ¹

4. Abbreviation. (computing) (abbreviation of wikipedia:entity-relationship diagram entity-relationship diagram) ¹

5. Abbreviation. (computing) (abbreviation of wikipedia:entity-relationship model entity-relationship model) ¹

6. Abbreviation. (medicine) (abbreviation of emergency room emergency room) ¹

7. Interjection. (U.K.) (non-gloss definition Said when hesitating in speech.) ¹

8. Verb. (informal) To utter the word "er" when hesitating in speech, found almost exclusively in the phrase '''um and er'''. ¹

¹ Source: wiktionary.com

Definition of Er

1. used to express hesitation [interj]

Medical Definition of Er

1. Oestrogen Receptor status of tumourous tissue, which may be positive or negative. The implications of hormonal receptor status of the tissue are twofold (1) if ER positive, i.e. Sensitive to the hormone, it may respond better to hormone treatments than ER negative tissue. (2) the ER positive tissue generally is slower-growing. (16 Dec 1997)

Er Pictures

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Lexicographical Neighbors of Er

EPI
EPICUS
EPIRB
EPMA
EPO
EPR
EPROM
EPROMs
EPS
EPSP
EPSS
EPT
EPTs
EQ
ER
ER-60 protease
ERA
ERAs
ERBF
ERC
ERCP
ERD
ERISA
ERKs
ERM
ERNIE
ERP
ERPF

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