Crossword clue

“Biological building blocks”

This clue appeared as 55-Across in the NYT Crossword on Friday, March 20, 2026. The answer has 10 letters.

Answer · 10 lettersFirst appearance
AMINOACIDS
Letters10
Starts withA
Ends withS
Vowels5

Where this clue has appeared

About this clue

The clue “Biological building blocks” ran in the NYT Crossword on March 20, 2026 as 55-Across. Its answer is a 10-letter word that starts with A and ends with S, with 5 vowels, which often points to a phrase, a name or a borrowed word.

See every answer from the puzzle on the NYT Crossword page for March 20, 2026, or learn how clues like this work in our guide to crossword clue types.

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FAQ

What is the answer to the “Biological building blocks” clue?+

The answer is AMINOACIDS (10 letters), from the NYT Crossword of March 20, 2026.

Where has this clue appeared?+

We have seen it 1 time in the NYT Crossword.

How do I find other NYT Crossword answers?+

Open the full list of answers for March 20, 2026, or browse every date on the NYT Crossword hub.