sr
English Thesaurus
1. the unit of solid angle adopted under the Systeme International d'Unites (noun.quantity)
| hypernym | : | angular unit, |
| definition | : | a unit of measurement for angles (noun.quantity) |
| part meronym | : | sphere, |
| definition | : | a three-dimensional closed surface such that every point on the surface is equidistant from the center (noun.shape) |
2. a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite (noun.substance)
| hypernym | : | metal, metallic element, |
| definition | : | any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. (noun.substance) |
| hyponym | : | strontium 90, |
| definition | : | a radioactive isotope of strontium (with the mass number 90) that is present in the fallout from nuclear explosions; can be assimilated like calcium into bones (noun.substance) |
| substance meronym | : | celestite, |
| definition | : | a mineral consisting of strontium sulphate (noun.substance) |
| substance meronym | : | strontianite, |
| definition | : | a mineral consisting of strontium carbonate (noun.substance) |
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