rehydration
"rehydration" is a 11-letter English headword indexed on PlainSpell.
The verdict
“rehydration” is uncommon English (frequency #66,979 among 21,470 “R” headwords), classed as a noun. The kind of spelling people second-guess.
- #66,979
- frequency rank, English
- 21,470
- “R” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The replenishment of water and electrolytes lost through dehydration.
| Property | Value |
|---|---|
| Headword | rehydration |
| Language | English |
| Part of speech | Noun |
| Letters | 11 |
| Frequency rank | #66,979 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “rehydration” sits in English frequency
Rare enough to double-check
rehydration is uncommon English at frequency #66,979 among 21,470 “R” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The replenishment of water and electrolytes lost through dehydration.".
We couldn't generate a plausible misspelling set for rehydration, since its letter pattern doesn't lend itself to common typo substitutions. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From re- + hydration. The correct English form is rehydration, spelled R-E-H-Y-D-R-A-T-I-O-N.
Definition
- 1The replenishment of water and electrolytes lost through dehydration.
Etymology
From re- + hydration.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “rehydration”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is R-E-H-Y-D-R-A-T-I-O-N - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
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.