Fissile rock

Editorially verified for the Oct 17, 2026

30 Across

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A piece of shale showing its thin, layered structure.

Clue explainedFact checked

Shale is a fine-grained sedimentary rock that forms from compacted mud and clay. Its defining trait here is fissility: it tends to break along thin, flat layers, unlike a massive rock that fractures irregularly. That layered structure is why shale can split into sheets.

Clue type:
Definition

NYT Crossword

This clue's Saturday, October 17, 2026 appearance

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The answer to “Fissile rock” in the New York Times crossword is SHALE — a 5-letter word. It most recently appeared in the New York Times crossword on October 17, 2026, a Saturday puzzle, at 30-Across. 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.

“Fissile rock” answer

SHALE (5 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 SHALE.

What does SHALE mean?

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

(noun)

  • soft finely stratified sedimentary rock that formed from consolidated mud or clay and can be split easily into fragile plates

When else has “Fissile rock” appeared?

New York Times 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.

October 17, 2026 (most recent) → SHALE. We haven't indexed another appearance of this exact clue yet.

Frequently asked questions

What is the answer to “Fissile rock”?

The answer is SHALE, a 5-letter word. It most recently appeared in the New York Times crossword on October 17, 2026.

How many letters is the answer to “Fissile rock”?

5 letters: SHALE.

When did this clue appear?

Most recently in the New York Times crossword on October 17, 2026 (a Saturday puzzle), at 30-Across.

Can “Fissile rock” have a different answer?

Yes — New York Times sometimes reuses a clue with a different solution to fit the grid. The answers we've recorded for each date it appeared are listed above when available.

Where can I find the rest of this day's NYT Crossword answers?

The full grid for October 17, 2026 is on the NYT Crossword answers page, with every clue and answer from that puzzle.

New York Times Crossword is published by The New York Times; WordHint is an independent site and is not affiliated with or endorsed by the publisher.

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