Strontium

//ˈstɹɒn.ti.əm// noun

noun ·Uncommon ·Advanced level

Definitions

Noun
  1. 1
    The metallic chemical element (symbol Sr) with an atomic number of 38. It is a soft, reactive, silvery alkaline earth metal. uncountable, usually
  2. 2
    a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite wordnet
  3. 3
    A single atom of this element. countable, usually

Example

More examples

"Strontium 90: One of the radioisotopes of strontium; part of radioactive fallout, harmful to human health."

Etymology

Coined by British chemist Humphry Davy in 1808, after the earlier term strontianite, for the name of the Scottish town Strontian.

Related phrases

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.