Meaning
Any cation derived by the addition of a proton to the hydride of any element of the nitrogen, chalcogen or halogen families.
Etymology
Origin: Latin
Etymology tree New Latin ammōniumbor. English ammonium English onium From ammonium.
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 2021, 2023, 2024, 2025, 2026.