moment of inertia
"moment-of-inertia" is a 15-letter English headword indexed on PlainSpell.
The verdict
“moment of inertia” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 17
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A measure of a rigid body's resistance to change in its angular velocity around a given axis.
Corpus desk
Index EN-moment-of-inertia · moment of inertia · English
moment of inertia · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 17 letters
- VOW-7 7 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.
| Property | Value |
|---|---|
| Headword | moment of inertia |
| Language | English |
| Part of speech | Noun |
| Letters | 17 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “moment of inertia” in English
Rare enough to double-check
moment of inertia is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
Zero misspellings are on record for moment of inertia in our index, a straightforward case of a spelling with little room for common typos. Our confusable-pair dataset has no match for it, which tends to mean the word is visually distinctive enough to stand on its own.
This headword's origin isn't recorded in our source data, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is moment of inertia, spelled M-O-M-E-N-T- -O-F- -I-N-E-R-T-I-A.
Definition
- 1A measure of a rigid body's resistance to change in its angular velocity around a given axis.
- 2Second moment of area; a measure of a rigid body's resistance to bending.
Recorded use
Wiktionary examplesThese source excerpts show how moment of inertia appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
The moment of inertia of a rigid body is a quantity that determines the torque needed for a given angular acceleration about a given rotational axis, analogous to how mass determines the force needed for a given acceleration.
The moments of inertia of a heterogeneous body whose boundary is a surface of uniform density may sometimes be found by the method of differentiation.
Synonyms
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.