megagram

noun

"megagram" is a 8-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An SI unit of mass equal to 10⁶ grams. Symbol: Mg

Corpus desk

Index EN-megagram · megagram · English

megagram · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • 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 megagram
PropertyValue
Headwordmegagram
LanguageEnglish
Part of speechNoun
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “megagram” in English

megagramranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

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

Rare enough to double-check

megagram is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "An SI unit of mass equal to 10⁶ grams. Symbol: Mg".

Our edit-distance generator produced no likely misspellings for megagram, typically a sign the spelling maps closely to how the word sounds. We don't track a confusable pairing for this entry, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From mega- + gram. The correct English form is megagram, spelled M-E-G-A-G-R-A-M.

Definition

  1. 1
    An SI unit of mass equal to 10⁶ grams. Symbol: Mg

Recorded use

Wiktionary examples

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

  1. Holonym: gigagram
  2. Meronyms: picogram < nanogram < microgram < milligram < gram < kilogram

Etymology

From mega- + gram.

This word in other languages

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 "megagram"?
"megagram" is spelled M-E-G-A-G-R-A-M.
What does "megagram" mean?
As a noun, "megagram" means: An SI unit of mass equal to 10⁶ grams. Symbol: Mg
What is the origin of the word "megagram"?
From mega- + gram. 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