impedance
[ɪmˈpiːdn̩s]
"impedance" is a 9-letter English headword indexed on PlainSpell.
The verdict
“impedance” is a moderately-common English word, ranked #23,867 in English word frequency and used as a noun.
- #23,867
- frequency rank, English
- 9
- letters
- 14
- tracked misspellings
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The act of impeding; that which impedes; a hindrance.
| Property | Value |
|---|---|
| Headword | impedance |
| Language | English |
| Part of speech | Noun |
| IPA | [ɪmˈpiːdn̩s] |
| Letters | 9 |
| Frequency rank | #23,867 |
| Misspellings tracked | 14 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “impedance” sits in English frequency
Spelling & Dictionary Insight
The English entry for impedance is 9 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as [ɪmˈpiːdn̩s]. Corpus data places it at rank #23,867 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 4 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 14 likely wrong-spelling variants for impedance, with forms such as "imepdance", "immpedance", and "impdeance". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. 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 impede + -ance. In sense 2 and sense 3 it was coined by English mathematician and physicist Oliver Heaviside in 1886. The correct English form is impedance, spelled I-M-P-E-D-A-N-C-E.
Definition
- 1The act of impeding; that which impedes; a hindrance.
- 2A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, and inductive and capacitive reactances; the ratio of voltage to current treated as complex quantities.
- 3A quantity analogous to electrical impedance in some other energy domain
- 4A quantity analogous to electrical impedance in some other energy domain
Etymology
From impede + -ance. In sense 2 and sense 3 it was coined by English mathematician and physicist Oliver Heaviside in 1886.
This word in other languages
Common misspellings
Also misspelled as: imepdance,immpedance,impdeance,impeadnce,impedacne,impedancce,impedanec,impedannce,impeddance,impedence,impednace,imppedance,ipmedance,mipedance
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of impedance - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
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
How do you spell "impedance"?
What does "impedance" mean?
What are common misspellings of "impedance"?
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Using “impedance”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-M-P-E-D-A-N-C-E - every other letter order is a misspelling in standard orthography.
- Say it as [ɪmˈpiːdn̩s] (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.