Irpa
1.
International Radiation Protection Association
2.
International Retinitis Pigmentosa Association
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- Irptc
International Register of Potentially Toxic Chemicals
- Irq
abbreviation 1. Iraq (international car registration) interrupt request 1. interrupt request 2. Iraq (international vehicle ID)
- Irr
1. Iran-rial (currency) 2. interrange ratio
- Irra
[eer-ah] /ˈɪər ɑ/ noun 1. the Akkadian god of pestilence.
- Irradiance
[ih-rey-dee-uh ns] /ɪˈreɪ di əns/ noun, Physics. 1. incident flux of radiant energy per unit area. /ɪˈreɪdɪəns/ noun 1. the radiant flux incident on unit area of a surface. It is measured in watts per square metre Ee Also called irradiation Compare illuminance adj. 1660s, from irradiant (1520s), from Latin irradiantem (nominative irradians), present participle […]