mho

noun

"mho" is a 3-letter English headword indexed on PlainSpell.

The verdict

“mho” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
3
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A former unit of electric conductance, equivalent to and superseded by the siemens but still sometimes used in some contexts.

Corpus desk

Index EN-mho · mho · English

mho · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MID 3 letters
  • VOW-1 1 vowel
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "M" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for mho
PropertyValue
Headwordmho
LanguageEnglish
Part of speechNoun
Letters3
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “mho” in English

mhosits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

mho is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A former unit of electric conductance, equivalent to and superseded by the siemens but still sometimes used in some contexts.".

The misspelling generator found no plausible variants for mho, typically a sign the spelling maps closely to how the word sounds. Our dataset records no confusable match here, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: ohm spelled backwards. The correct English form is mho, spelled M-H-O.

Definition

  1. 1
    A former unit of electric conductance, equivalent to and superseded by the siemens but still sometimes used in some contexts.

Recorded use

Wiktionary examples

These source excerpts show how mho appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Near-synonyms: siemens, S
  2. If resistance is measured in ohms, conductance is measured in mhos.

Etymology

ohm spelled backwards.

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

How do you spell "mho"?
"mho" is spelled M-H-O.
What does "mho" mean?
As a noun, "mho" means: A former unit of electric conductance, equivalent to and superseded by the siemens but still sometimes used in some contexts.
What is the origin of the word "mho"?
ohm spelled backwards. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list