Irn.
/ˌʌɪˈɑː/, U.S. /ˌaɪˈɑr/ Chemistry.
The element iridium.
ΚΠ
1826 tr. J. J. Berzelius in Ann. Philos. New Ser. 11 422 Osmiuret of iridium. IrOsx [Fr. Osmiure d'iridium. Ir OSx].
1863 Chem. News 14 Feb. 74/1 The iridium and sodium salt has the formula Ir2Cl3,3NaCl + 24 HO, and crystallises well.
1906 H. J. H. Fenton Notes Qualitative Anal. (new ed.) 159 An indigo-blue colloidal ppt. of Ir(OH)4.
2012 C. H. Langmuir & W. Broecker How to build Habitable Planet xvii. 518 Ir was..so abundant that it could not be explained by the tiny amounts of cosmic dust entering the atmosphere.
This is a new entry (OED Third Edition, December 2013; most recently modified version published online March 2022).
> see also
also refers to : ir-prefix1
also refers to : ir-prefix2
also refers to : -ir-comb. form
> as lemmas
I.R.
I.R. n. infra-red.
Π
1957 Which? Autumn 7/2 An investigation into the effects, on bottle-makers, of the infra-red and ultra-violet (often referred to as I.R. and U.V.) radiations.
1967 Electronics 40 127/1 A scope tracing that shows i-r energy as a curve derived from the video signal, with the amount of energy determining vertical deflection.
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n.1826see also
as lemmas
- to put plead the béal bocht
- to put pressure on
- to put provision to
- to put quench a person's light
- to put quench a person's lights
- to put salt on the tail
- to put side on
- to put side on a ball
- to put silence to
- to put some period to
- to put someone in hazard
- to put someone off his stroke
- to put someone off stroke
- to put someone on a charge
- to put someone on blast
- to put someone right
- to put someone under the table
- to put something against a person's beard
- to put something down one's neck
- to put something in a person's head
- to put something in delay
- to put something in hazard
- to put something into a person's head
- to put something on delay
- to put something on ice