Meaning
any of a class of unsaturated ketones, having a general formula R₁R₂C=C=O, that react as if they were inner acid anhydrides
Etymology
Origin: German
Etymology tree German Ketonbor. English ketone English keto- English -ene English ketene From keto- + -ene.
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 2020, 2021, 2022, 2024, 2025, 2026.