Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun sr

2 senses of sr

Sense 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)
       => metallic element, metal -- (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)

Sense 2
steradian, sr -- (the unit of solid angle adopted under the Systeme International d'Unites)
       => angular unit -- (a unit of measurement for angles)