deltoid
/ˈdɛɫtɔɪd/
"deltoid" is a 7-letter English headword indexed on PlainSpell.
The verdict
“deltoid” is uncommon English (frequency #81,260 among 26,416 “D” headwords), classed as a noun. The kind of spelling people second-guess.
- #81,260
- frequency rank, English
- 26,416
- “D” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The deltoid muscle, a triangular muscle on the human shoulder.
| Property | Value |
|---|---|
| Headword | deltoid |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈdɛɫtɔɪd/ |
| Letters | 7 |
| Frequency rank | #81,260 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “deltoid” sits in English frequency
Rare enough to double-check
deltoid is uncommon English at frequency #81,260 among 26,416 “D” headwords, classed as anoun, transcribed /ˈdɛɫtɔɪd/. Rarity is why readers land here mid-draft. 4 senses are on record.
deltoid has no tracked misspelling variants, since its letter sequence doesn't invite the usual edit-distance slips. Our confusable-pair dataset has no match for it, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Etymologically, the entry records: From Latin deltoideus, which was in turn from Ancient Greek adjective δελτοειδής (deltoeidḗs). See also: δέλτα (délta), the fourth letter of the Greek alphabet. The correct English form is deltoid, spelled D-E-L-T-O-I-D.
Definition
- 1The deltoid muscle, a triangular muscle on the human shoulder.
- 2The deltoid ligament, a triangular ligament on the human ankle.
- 3A kite (quadrilateral having two pairs of edges of equal length, the edges of each pair touching each other at one end).
- 4A deltoid curve (hypocycloid with three cusps).
Etymology
From Latin deltoideus, which was in turn from Ancient Greek adjective δελτοειδής (deltoeidḗs). See also: δέλτα (délta), the fourth letter of the Greek alphabet.
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); 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
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Using “deltoid”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-E-L-T-O-I-D - every other letter order is a misspelling in standard orthography.
- Say it as /ˈdɛɫtɔɪd/ (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
Other uncommon English words near this rank
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.