ionosphere
Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.
Letters
10 characters
Language
English
word origin
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Detailed reference entry for the English word "ionosphere", 10-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Wiktionary, and usage frequency ranked against an open word-frequency list covering the top 100,000 English words. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "ionosphere" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "ionosphere" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.
ionosphere is aEnglishnoun. It means: The part of the Earth's atmosphere beginning at an altitude of about 50 kilometers (31 miles) and extending outward 500 kilometers (310 miles) or more.
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Browse all word comparisons →| Property | Value |
|---|---|
| Headword | ionosphere |
| Language | English |
| Part of speech | Noun |
| Letters | 10 |
| Frequency rank | #54,860 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Frequency rank visualization
Spelling & Dictionary Insight
The English entry for ionosphere is 10 letters long, classified as anoun. Corpus data places it at rank #54,860 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
No misspelling variants are generated for ionosphere in our index, suggesting the orthography follows predictable English patterns.It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From iono- + -sphere. Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is ionosphere, spelled I-O-N-O-S-P-H-E-R-E, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.
Definition
- 1The part of the Earth's atmosphere beginning at an altitude of about 50 kilometers (31 miles) and extending outward 500 kilometers (310 miles) or more.
- 2The similar region of the atmosphere of another planet.
Etymology
From iono- + -sphere.
This word in other languages
Frequency rank: #54,860 in English
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Nearby English words
Other entries that begin with the letter I in our English index: