prompt criticality
"prompt-criticality" is a 17-letter English headword indexed on PlainSpell.
The verdict
“prompt criticality” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 18
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The point at which the prompt neutrons produced by a nuclear fission chain reaction are just sufficient to sustain the chain reaction on their own (the state of being prompt critical); past this po...
| Property | Value |
|---|---|
| Headword | prompt criticality |
| Language | English |
| Part of speech | Noun |
| Letters | 18 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “prompt criticality” sits in English frequency
Rare enough to double-check
prompt criticality is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The point at which the prompt neutrons produced by a nuclear fission chain reaction are just sufficient to sustain the chain reaction on their own (the state of being prompt critical); past this po...".
The misspelling generator found no plausible variants for prompt criticality, a sign its spelling follows regular English conventions. No confusable counterpart is on file for this word, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
No borrowing history is documented for this entry, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct English form is prompt criticality, spelled P-R-O-M-P-T- -C-R-I-T-I-C-A-L-I-T-Y.
Definition
- 1The point at which the prompt neutrons produced by a nuclear fission chain reaction are just sufficient to sustain the chain reaction on their own (the state of being prompt critical); past this point, changes in reaction power are controlled by changes in the prompt neutron flux, and occur on a timeframe of milliseconds, too rapidly to be controlled by mechanical means.
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
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Using “prompt criticality”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is P-R-O-M-P-T- -C-R-I-T-I-C-A-L-I-T-Y - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.