ionospheric
"ionospheric" is a 11-letter English headword indexed on PlainSpell.
The verdict
“ionospheric” is uncommon English (frequency #80,571 among 17,902 “I” headwords), classed as an adjective. The kind of spelling people second-guess.
- #80,571
- frequency rank, English
- 17,902
- “I” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Of or pertaining to the ionosphere.
| Property | Value |
|---|---|
| Headword | ionospheric |
| Language | English |
| Part of speech | Adjective |
| Letters | 11 |
| Frequency rank | #80,571 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “ionospheric” sits in English frequency
Rare enough to double-check
ionospheric is uncommon English at frequency #80,571 among 17,902 “I” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Of or pertaining to the ionosphere.".
ionospheric has no tracked misspelling variants, a straightforward case of a spelling with little room for common typos. No confusable counterpart is on file for this word, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From ionosphere + -ic. The correct English form is ionospheric, spelled I-O-N-O-S-P-H-E-R-I-C.
Definition
- 1Of or pertaining to the ionosphere.
Etymology
From ionosphere + -ic.
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 “ionospheric”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-O-N-O-S-P-H-E-R-I-C - 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.