PRONUNCIATION / Science and learning

How to pronounce nuclear

Check nuclear pronunciation with CMUdict sound tokens and stress, then practise two original sentences and download a voiceover audition worksheet.

The dictionary sound sequence

CMUdict lists this North American English pronunciation for nuclear. Read each sequence from left to right. The numbers mark vowel stress: 1 primary, 2 secondary, 0 unstressed.

Dictionary variant 1

N UW1 K L IY0 ER0

Syllable estimate: 3 vowel nuclei
Primary stress: 1st vowel position

Check nuclear in Merriam-Webster and listen to available dictionary audio.

Syllable counts come from vowel tokens; CMUdict does not supply syllable boundaries here. Variant order follows the dictionary and does not rank correctness. This lexicon does not represent every accent or context.

Use nuclear in context

Nuclear appears in explanations of atomic processes, energy, weapons, and some other specialized contexts. Narration should define the particular subject instead of letting the adjective imply a single topic. Technical terms, quantities, and institutional names nearby deserve review so the whole explanation remains understandable to the intended audience.

The documentary compares several approaches to nuclear energy.
The lesson introduces nuclear structure before discussing chemical bonds.

Read the sound tokens

Each example word below is a cue for the named sound, rather than a respelling of nuclear. Unstressed vowels may sound reduced. These cues follow the CMU phoneme-set key (Appendix A).

Nsound in kneeconsonant

UWsound in twovowel

Ksound in keyconsonant

Lsound in leeconsonant

IYsound in eatvowel

ERsound in hurtvowel

TAKE IT TO YOUR NEXT RECORDING

Make an audition worksheet

Select a dictionary variant for your checklist. The two original sentences retain their normal spelling; this worksheet helps you review a recording rather than forcing a speech engine to use phonemes.

Worksheet pronunciation variant

Your plain-text audition worksheet

How to pronounce nuclear

Word: nuclear
Dictionary variant: 1 of 1
CMUdict ARPABET: N UW1 K L IY0 ER0
Vowel nuclei / estimated syllables: 3
Primary stress: 1st vowel position

ORIGINAL AUDITION SCRIPT
The documentary compares several approaches to nuclear energy.
The lesson introduces nuclear structure before discussing chemical bonds.

REVIEW CHECKLIST
[ ] Read both sentences naturally; keep the source wording.
[ ] Compare the intended pronunciation with the selected dictionary variant.
[ ] Listen for vowel sounds, consonants, and word stress in context.
[ ] Check with a speaker or another dictionary when accent or meaning matters.
[ ] Generate and listen to a short Murmur sample before exporting the full script.

Practice note: Audition nuclear with the technical noun it modifies, then compare it directly with your chosen reference. Listen for an unintended rearrangement of sounds and review the complete explanatory sentence, including any numbers or abbreviations that may need separate formatting.

CMUdict is a North American English lexicon, not a recording or a complete accent guide.
Variant order is dictionary order; it is not a ranking of correctness.
Source: https://github.com/cmusphinx/cmudict/blob/74790861f652b15e4ac49015a90074ad62a27690/cmudict.dict
Source commit: 74790861f652b15e4ac49015a90074ad62a27690
License: https://www.murmurtts.com/downloads/cmudict-license.txt
Reference: https://www.murmurtts.com/pronunciation/nuclear

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Dictionary source

The phonemes on this page come from CMU Pronouncing Dictionary. The dictionary maintainers acknowledge that errors and omissions can remain; check another source or a speaker when the pronunciation matters.

CMUdict README · Included dictionary license

Source version and checksum

Commit: 74790861f652b15e4ac49015a90074ad62a27690

Dictionary SHA-256: 81917843c7f44ce2b094ac63873c2c7a4cf802040792c455ba3ca406891c3d22

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