“Cosmic radiation particle”

Here is the verified answer to the Wall Street Journal Crossword clue “Cosmic radiation particle”, last seen on November 10, 2026.

Answer hidden — reveal below

M??N

A 4-letter across entry from the Tuesday puzzle

The Answer

MUON

The answer to “Cosmic radiation particle” is MUON

Letters4

DirectionAcross

PublishedNov 10, 2026

Letter analysis

The clue “Cosmic radiation particle” appeared in the Wall Street Journal Crossword on Tuesday, November 10, 2026 as a across entry. The verified answer is MUON — a 4-letter word that begins with M and ends with N.

This answer contains 2 vowels and 2 consonants. Click through any related clue below to keep solving, or open the full answer key for the day from the link above.

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Frequently Asked Questions

What is the answer to “Cosmic radiation particle”?

The answer to the Wall Street Journal Crossword clue “Cosmic radiation particle” is MUON — a 4-letter across entry from the November 10, 2026 puzzle.

How many letters is the answer?

MUON has 4 letters — 2 vowels and 2 consonants.

Are these answers official?

WSJCrosswordAnswers.org is an independent reference site, not affiliated with the Wall Street Journal. We solve and verify each puzzle by hand before publishing.