Meaning
An evaporite, consisting of mixture of sodium carbonate and sodium bicarbonate, Na₃HCO₃CO₃·2H₂O.
Etymology
Origin: Ancient Greek
From Swedish trona or from Spanish trona, both derived from Arabic أَطْرُون (ʔaṭrūn), from نَطْرُون (naṭrūn), from Ancient Greek νίτρον (nítron), ultimately from Egyptian nṯrj: R9. Doublet of natron and niter.
NYT Puzzle Appearances
No published puzzle dates on file for this word yet. It is part of the official NYT Spelling Bee word list for 2019, 2020, 2023, 2024, 2025, 2026.