Definitions for



Overview of noun sr

The noun sr has 2 senses? (no senses from tagged texts)
1. strontium, Sr, atomic number 38

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

2. steradian, sr

(the unit of solid angle adopted under the Systeme International d'Unites)

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