nuclear family

noun

"nuclear-family" is a 13-letter English headword indexed on PlainSpell.

The verdict

“nuclear family” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
14
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A family unit consisting of two parents (traditionally a mother and a father) and their children.

Corpus desk

Index EN-nuclear-family · nuclear family · English

nuclear family · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 14 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "N" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for nuclear family
PropertyValue
Headwordnuclear family
LanguageEnglish
Part of speechNoun
Letters14
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “nuclear family” in English

nuclear familyfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

nuclear family is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A family unit consisting of two parents (traditionally a mother and a father) and their children.".

nuclear family has no tracked misspelling variants, since its letter sequence doesn't invite the usual edit-distance slips. No close-neighbour confusable shows up for this headword in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From nuclear + family. The correct English form is nuclear family, spelled N-U-C-L-E-A-R- -F-A-M-I-L-Y.

Definition

  1. 1
    A family unit consisting of two parents (traditionally a mother and a father) and their children.

Recorded use

Wiktionary example

These source excerpts show how nuclear family appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. The initial result of that fragmentation, the nuclear family, didn’t seem so bad. But then, because the nuclear family is so brittle, the fragmentation continued. In many sectors of society, nuclear families fragmented into single-parent families, single-parent families into chaotic families or no families.

Etymology

From nuclear + family.

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "nuclear family"?
"nuclear family" is spelled N-U-C-L-E-A-R- -F-A-M-I-L-Y.
What does "nuclear family" mean?
As a noun, "nuclear family" means: A family unit consisting of two parents (traditionally a mother and a father) and their children.
What is the origin of the word "nuclear family"?
From nuclear + family. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list