English dictionary



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English noun: Sr

1. Sr (substance) a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite


Synonymsatomic number 38, strontium


Broader (hypernym)metal, metallic element


Narrower (hyponym)strontium 90


Substance meronymcelestite, strontianite

2. sr (quantity) the unit of solid angle adopted under the Systeme International d'Unites


Synonymssteradian


Broader (hypernym)angular unit


Part meronymsphere









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