What is "eir"

a. (context neologism English) Belonging to em, their (qualifier: singular). {{non-gloss definition|Gender-neutral third-person singular possessive adjective, coordinate with (term: his) and (term: her).}}

EIR may refer to:

• Effective interest rate, a banking term
• Entomological inoculation rate, the measure of the intensity of malaria transmission
• Entrepreneur In Residence or Executive In Residence, a term in venture capital and business education
• Environmental Information Regulations 2004, a UK Statutory Instrument
• Equipment Identity Register, in a Network Switching Subsystem
• Extended information rate, burstable bandwidth in a Frame Relay network
• Establishment Inspection Report, the result of an investigation by the US FDA.
• Environmental Impact Report, see Environmental impact assessment
• Executive Intelligence Review, the flagship publication of the LaRouche movement
• Kodak Ektachrome Professional Infrared/EIR film, a type of Color Infrared film
• Ethniko Idryma Radiofonias, the National Radio Foundation of Greece
• East Indian Railway Company, introduced railways to eastern and northern India, later known as East Indian Railway (EIR)
• Eat In Restaurant, a commonly used abbreviation in Chicago urban area.

Eir may refer to

• Eir, a goddess in Norse mythology
• Eir (telecommunications), a major provider of telecommunications in Ireland
• Eir, a Spivak pronoun

Eircom Limited, trading as Eir, is a fixed, mobile and broadband telecommunications company in Ireland, and a former state-owned monopolist. It is the largest telecommunications operator in the Republic, with a division to service the business & corporate telecom markets in Northern Ireland and Britain. As Bord Telecom Éireann, the company was state-owned until 1999, when it was floated on the Irish and New York Stock Exchanges.

Eir operates the fixed-line telephone network, an LTE ( 4G), HSDPA ( 3G) and GSM/ EDGE (2.75G) mobile telephone network Meteor (acquired from AllTel (Western Wireless) in 2005) and acts as an internet service provider (ISP) eircom.net. As of Q1 2013, Eircom had 54% market share of fixed voice lines; 40% market share of fixed broadband; 11% of mobile broadband; and 17% of mobile. By late 2007 Eircom added their 500,000th DSL subscriber but broadband share may have fallen to 44% due to growth of fixed wireless, cable and fibre services.

Its main competitors are Virgin Media Ireland (which operates a cable TV & Broadband network), Vodafone Ireland (which bought BT Ireland's residential customer base on 22 July 2009 and is accessed through Eir's network and BT Ireland's fibre), Imagine Communications (Irish Broadband & Gaelic Telecom) and Magnet Networks and Smart Telecom, with a mix of LLU/ GLUMP from Eircom and fibre.