Particle in a stellar wind

The answer to “Particle in a stellar wind” in the The Washington Post crossword is ION — a 3-letter word. It most recently appeared in the The Washington Post crossword on July 19, 2026, a Sunday puzzle, at 75-Down. Below you'll find why that fill fits, every other answer we've recorded for this clue, and links into the puzzle it came from.

“Particle in a stellar wind” answer

ION (3 letters)

Reveal the solution one letter at a time with the tiles above if you'd rather nudge yourself toward it than see the whole word at once. Just want it outright? The answer is ION.

Why the answer is ION

Think about something tiny that flows through space! 🌌

What does ION mean?

Reading the plain dictionary sense of ION is often the fastest way to see why it answers this clue.

When else has “Particle in a stellar wind” appeared?

The Washington Post reuses clues across dates, sometimes with a different answer depending on the grid. Here's where this exact clue has shown up, and what the answer was each time — handy when you're checking whether today's fill is the only one.

July 19, 2026 (most recent) → ION. We haven't indexed another appearance of this exact clue yet.

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