Corrosive substance; LSD

Latest answer — September 08, 2026

1 Across

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Clue explained

ACID is a corrosive substance; LSD is also commonly called acid, giving the clue two closely related definitions. The answer is a noun.

Clue type:
Definition
A laboratory beaker containing a corrosive acid.

Telegraph Mini Crossword

This clue's Tuesday, September 08, 2026 appearance

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Across

  1. 1Corrosive substance; LSD
  2. 4Parent
  3. 6Rocky Mountain state
  4. 8Helium or argon, say
  5. 9Exam

Down

  1. 1Surrounded by
  2. 2What cows chew
  3. 3Picture
  4. 5Mail; job
  5. 7Possesses

The answer to “Corrosive substance; LSD” in the The Telegraph Mini crossword is ACID — a 4-letter word. It most recently appeared in the The Telegraph Mini crossword on September 8, 2026 at 1-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.

“Corrosive substance; LSD” answer

ACID (4 letters)

Use the reveal tiles above to uncover the solution one letter at a time if you'd rather nudge yourself toward it than see the whole word at once. Prefer the full answer straight away? It's ACID.

What does ACID mean?

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

(noun)

  • a substance with particular chemical properties including turning litmus red, neutralizing alkalis, and dissolving some metals; typically, a corrosive or sour-tasting liquid of this kind
  • a molecule or other species which can donate a proton or accept an electron pair in reactions
  • the drug LSD

When else has “Corrosive substance; LSD” appeared?

The Telegraph Mini 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.

September 8, 2026 (most recent) → ACID. We haven't indexed another appearance of this exact clue yet.

Frequently asked questions

What is the answer to “Corrosive substance; LSD”?

The answer is ACID, a 4-letter word. It most recently appeared in the The Telegraph Mini crossword on September 8, 2026.

How many letters is the answer to “Corrosive substance; LSD”?

4 letters: ACID.

When did this clue appear?

Most recently in the The Telegraph Mini crossword on September 8, 2026, at 1-Across.

Can “Corrosive substance; LSD” have a different answer?

Yes — The Telegraph Mini 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 today's Telegraph Mini answers?

Every clue and answer from that day's puzzle is linked above, and the full grid is on the Telegraph Mini answers page.

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