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“Nuclear power source”

The verified answer to the Newsday Crossword clue “Nuclear power source”, with letter-by-letter analysis and the full puzzle context for the Sunday, April 26, 2026 puzzle.

Published · Down · 4 letters

Hints first

Letters 4
First letter A
Last letter M
A ? ? M

A 4-letter down entry from the Sunday puzzle

The Answer

A T O M

The answer to “Nuclear power source” is ATOM

Letters 4
Direction Down
Published Apr 26, 2026

Letter analysis: the 4-letter answer

Vowels, consonants, and crossword construction notes
Unique 4 of 4 positions
Vowels 2 50% of word
Consonants 2 non-vowels
First letter A starts with

The clue “Nuclear power source” appeared in the Newsday Crossword on Sunday, April 26, 2026 as a down entry. The verified answer is ATOM — a 4-letter word that begins with A and ends with M.

This answer contains 2 vowels and 2 consonants. The Newsday Crossword is published daily by Newsday on Long Island and edited by Stan Newman, whose Saturday Stumper is widely considered one of the toughest mainstream crosswords in print.

Other clues with the answer ATOM

ATOM has been used as the answer for these Newsday Crossword clues
“Half the alphabet” May 16, 2026 “Part of a molecule” Apr 7, 2026 “Part of a molecule” Mar 16, 2026 “Electron's home” Jan 13, 2026 “Bit of bromine” Jan 11, 2026 “Home for protons” Dec 31, 2025 “Minor matter?” Dec 18, 2025 “Molecule portion” Dec 16, 2025 “Protons' home” Nov 23, 2025 “Molecule part” Nov 18, 2025 “Home for protons” Oct 8, 2025

More clues from the April 26, 2026 puzzle

Sunday Newsday Crossword
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Spanish for "fast" 6 ℓ · D Carrier to Copenhagen 3 ℓ · D Possible pasta preference 7 ℓ · D Danson or Turner 3 ℓ · D Beach shelter 6 ℓ · D Madeline of Blazing Saddles 4 ℓ · D Stratford's river 4 ℓ · D Hawaiian fish, for short 4 ℓ · D Chin indentation 5 ℓ · A Collaborative websites 5 ℓ · A Swampy ground 3 ℓ · D French textile city 5 ℓ · D "Nothing, thanks" 6 ℓ · D Sloping walkway 4 ℓ · A "Take __ I am" 4 ℓ · D S&L posting 3 ℓ · D NYC venue with many Matisses 4 ℓ · A Plow pullers 4 ℓ · D Place for a belt 5 ℓ · D Give off, as steam 4 ℓ · D

Frequently asked questions about “Nuclear power source”

What is the answer to “Nuclear power source” in the Newsday Crossword?

The verified answer is ATOM — a 4-letter word that appeared as a down entry on Sunday, April 26, 2026.

How many letters is the answer to “Nuclear power source”?

The answer ATOM contains 4 letters.

Was “Nuclear power source” an across or down clue?

This clue ran as a Down entry.

Is this site affiliated with Newsday?

No. This is an independent fan reference site — we are not affiliated with Newsday. The Newsday Crossword is a trademark of its respective owner. We solve and verify each Newsday Crossword puzzle manually before publishing the answer key.

Nuclear power source — Newsday Crossword Clue Answer | Newsday Crossword Answers