beryllium

Etymology

It is formed from English beryl + -ium,^[2][3][4][5] while Merriam-Webster Unabridged, Barnhart and Klein have it as borrowed from New Latin beryllium, formed from Latin bēryllus (“beryl”) and the suffix of chemical elements -ium.^[6][7][8] The element was so called because it occurs in beryl, in which it was identified.^[2][9][8] The mineral's name comes from Old French beryl, from the same Latin word, from Ancient Greek βήρυλλος (bḗrullos), which the OED takes as probably a foreign word.^[2][9]

Earliest recorded meaning

The metallic element: Merriam-Webster Unabridged dates the word to 1819.^[6] The OED's first record is 1863, in Henry Watts's Dictionary of Chemistry, where it is a synonym for the metal called glucinum,^[2][7][9] and Dictionary.com dates it to 1860–65.^[5]

Semantic evolution

Etymonline and Klein say that the element was first identified in 1797 by the French chemist Louis Nicolas Vauquelin, in beryl or emerald, and Etymonline adds that the metal was first isolated in 1828.^[9][8] For much of the 19th century it competed with the name glucinum or glucinium, which Etymonline says was sometimes used until about 1900;^[9][3] Collins still records it as a former name.^[10] Derivatives followed in the late 19th and 20th centuries: beryllia, the oxide, and berylliosis, poisoning from inhaled beryllium compounds.^[3]

Timeline

• 1819 – the metallic element.^[6] The OED's first record is from 1863.^[2][7]

Meanings

Noun

1. A light, hard, steel-gray metallic chemical element, atomic number 4, symbol Be, that is toxic and is used in alloys with copper, in X-ray windows and in nuclear reactors.^{[6][4][10][3]}

Word family

• beryllium copper

Related words

• beryl
• berylliosis
• beryllonite
• brilliant
• glucinum

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
4. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
5. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
6. ^ a b c d Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
7. ^ a b c Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
8. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
9. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
10. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins