Carbon --

Latest answer — August 04, 2026

18 Across

It’s the gas you exhale and plants use during photosynthesis 🌿

Scroll down for rest of crossword answers

Eugene Sheffer Crossword

This clue's Tuesday, August 04, 2026 appearance

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Across

  1. 1Feudal worker
  2. 5Lustrous black
  3. 8Lacking slack
  4. 12Israeli airline
  5. 13Sch. founded by Jefferson
  6. 14Stood up
  7. 15Central point
  8. 16Greek philosopher
  9. 18Carbon --
  10. 20Not hidden
  11. 21Ambulance letters
  12. 22In the past
  13. 23Ralph -- Emerson
  14. 26Museum display
  15. 30Jargon suffix
  16. 31Started
  17. 32“Not impressed ...”
  18. 33Bishop’s district
  19. 36Garlicky mayo
  20. 38“Awesome, dude!”
  21. 39Mormon church, for short
  22. 40Diva’s solos
  23. 43Igneous rock
  24. 47God of wine
  25. 49Pronto
  26. 50Pass (out)
  27. 51Concorde, e.g.
  28. 52Being, to Brutus
  29. 53Online crafts site
  30. 54UFO fliers
  31. 55Michigan, e.g.

Down

  1. 1Fax
  2. 2Sci-fi race
  3. 3Swiss watch brand
  4. 4Showed off one’s biceps
  5. 5Ashley and Wynonna
  6. 6Pop singer Sands
  7. 7Eastern path
  8. 8Comedian Noah
  9. 9Highly rated
  10. 10Addict
  11. 11Try out
  12. 17Type of dancer
  13. 19Texter’s “I think”
  14. 22Succor
  15. 23Marry
  16. 24“Do -- say!”
  17. 25Zodiac feline
  18. 26Actress Ruby
  19. 27“I love,” to Livy
  20. 28Podcaster and motivational speaker -- Robbins
  21. 29Sashimi fish
  22. 31“Mad Men” hallucinogen
  23. 34Irritable
  24. 35Relaxed
  25. 36Commotion
  26. 37Jordan’s neighbor
  27. 39Rosters
  28. 40Wood-shaping tool
  29. 41Funny person
  30. 42Charged bits
  31. 43White-glove discovery
  32. 44“Insecure” star Rae
  33. 45To-do list item
  34. 46Duel tool
  35. 48Opposite of NNW

The answer to “Carbon --” in the Eugene Sheffer crossword is DIOXIDE — a 7-letter word. It most recently appeared in the Eugene Sheffer crossword on August 4, 2026, a Tuesday puzzle, at 18-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.

“Carbon --” answer

DIOXIDE (7 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 DIOXIDE.

Why the answer is DIOXIDE

It’s the gas you exhale and plants use during photosynthesis 🌿

What does DIOXIDE mean?

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

(noun)

  • an oxide containing two atoms of oxygen in its molecule or empirical formula

When else has “Carbon --” appeared?

Eugene Sheffer 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.

August 4, 2026 (most recent) → DIOXIDE. We haven't indexed another appearance of this exact clue yet.

Frequently asked questions

What is the answer to “Carbon --”?

The answer is DIOXIDE, a 7-letter word. It most recently appeared in the Eugene Sheffer crossword on August 4, 2026.

How many letters is the answer to “Carbon --”?

7 letters: DIOXIDE.

When did this clue appear?

Most recently in the Eugene Sheffer crossword on August 4, 2026 (a Tuesday puzzle), at 18-Across.

Can “Carbon --” have a different answer?

Yes — Eugene Sheffer 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 Eugene Sheffer answers?

The full grid for August 4, 2026 is on the Eugene Sheffer answers page, with every clue and answer from that puzzle.

Eugene Sheffer Crossword is published by King Features Syndicate; WordHint is an independent site and is not affiliated with or endorsed by the publisher.

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