natron

Etymology

It is borrowed from French natron,^{[2][3][4][5][6][7]} recorded in French in 1665 and as naitron in 1653,^[2] which is from Arabic نَطْرُون (naṭrūn),^[2][3][1] from Ancient Greek νίτρον (nítron, “sodium carbonate, natron”).^[2][3][1][8] Most dictionaries put Spanish natrón between the French and the Arabic,^{[4][5][6][7][9][10][1][11]} but the OED's revised entry records the Spanish form only from 1787 and derives it from French,^[2] and Etymonline says the French word is reported to come directly from Arabic.^[3] Beekes calls the Greek word an "Oriental loanword" which, like the Hebrew and Arabic words and probably Hittite nitri-, goes back to Egyptian nṯrj (“natron”);^[8][1] Etymonline says only that it is possibly of Eastern origin.^[3] The form Medieval Latin anatron, found also in Paracelsus in the 16th century, is from the Arabic word with the article assimilated.^[3] The English word is a doublet of nitre.^[12][1]

Earliest recorded meaning

Native sodium carbonate, a salt deposit: 1684, in the Philosophical Transactions of the Royal Society.^[2][5] Etymonline gives the 1680s, and Dictionary.com 1675–85.^[3][11]

Semantic evolution

The word has stayed close to its first sense.^[2][7] Dictionaries define it either as the mineral, a hydrous sodium carbonate found in solution and in evaporative residues,^[2][7][13] or, like Merriam-Webster Unabridged, as the mixture of sodium salts used in antiquity for embalming, in ceramic pastes and as a cleanser.^[5] The Greek word is already found in Sappho.^[8] A salt lake that yields the mineral is a natron lake.^[7] Etymonline makes the word the source of the chemical symbol Na for sodium and of the combining form natro- in the names of minerals containing sodium;^[3] natrium, the New Latin name, also goes back to it.^[1]

Timeline

• 1653 – French naitron, then natron in 1665.^[2]
• 1684 – the English word: native hydrous sodium carbonate.^[2][5]

Meanings

Noun

1. A white or yellowish mineral, a hydrated sodium carbonate, found in saline deposits and salt lakes.^[13][2][7]
2. A mixture of sodium salts used in ancient times for embalming, in ceramic pastes and for cleaning: The embalmers packed the body in natron.^[5]

Related words

• natrium
• nitre

Usage notes

The usual English pronunciation has the vowel of name; the Shorter Oxford also records a short first vowel, and the first edition of the OED (1906) gave /ˈnætrɒn/ as well.^[7][2]

References

1. ^ a b c d e f g h Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
5. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
6. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
7. ^ a b c d e f g Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
8. ^ a b c Beekes, Robert S. P. (2010), Etymological Dictionary of Greek, with the assistance of Lucien van Beek, Leiden Indo-European Etymological Dictionary Series 10, Leiden; Boston: Brill
9. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
10. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
11. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
12. ^ Skeat, Walter W. (1911), A Concise Etymological Dictionary of the English Language, new ed., Oxford: Clarendon Press
13. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins