deltoid

D2E1L1T1O1I1D2
UK/ˈdɛɫtɔɪd/

noun

The deltoid muscle, a triangular muscle on the human shoulder.

Similar
UncommonScrabble 9

Meanings

noundeltoid (plural deltoids)

plural deltoids

  1. anatomyThe deltoid muscle, a triangular muscle on the human shoulder.

    Synonyms: delt

  2. anatomyThe deltoid ligament, a triangular ligament on the human ankle.
  3. geometryA kite (quadrilateral having two pairs of edges of equal length, the edges of each pair touching each other at one end).
  4. geometryA deltoid curve (hypocycloid with three cusps).
adjectivedeltoid (not comparable)
  1. not comparableIn the shape of the uppercase Greek letter delta (Δ); triangular.
    1. not comparablebiologyOf a triangular or roughly triangular shape and attached to the stem via the side.
  2. not comparableOf or pertaining to the deltoid muscle.

Synonyms & antonyms

nounThe deltoid muscle, a triangular muscle on the human shoulder.

Similar

More synonyms by meaning

adjectivetriangular or suggesting a capital delta, with a point at the apex

nouna large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm

Similar
deltoid musclemusculus deltoideus

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Latindeltoideus
  2. Englishdeltoid

From Latin deltoideus, which was in turn from Ancient Greek adjective δελτοειδής (deltoeidḗs). See also: δέλτα (délta), the fourth letter of the Greek alphabet.

Full word history & related roots →

Translations

Catalan deltoide, deltoïdal
  • deltoidetriangular muscle on the human shoulder
  • deltoïdalof or connected with deltoid muscle
Chinese Cantonese 鷂形 /鹞形
  • 鷂形 /鹞形kite
Chinese Mandarin 三角肌, 箏形 /筝形
  • 三角肌 (sānjiǎojī)triangular muscle on the human shoulder
  • 箏形 /筝形 (zhēngxíng)kite
  • 鳶形 /鸢形 (yuānxíng)kite
Finnish hartialihas, deltaligamentti
  • hartialihastriangular muscle on the human shoulder
  • deltaligamenttitriangular ligament on the human ankle
  • leijakite
  • kolmiomainenbotany: of triangular shape
  • hartialihas-of or connected with deltoid muscle
  • hartialihaksenof or connected with deltoid muscle
French deltoïde, cerf-volant
  • deltoïdetriangular muscle on the human shoulder
  • cerf-volantkite
  • deltoïdeof or connected with deltoid muscle
German Deltamuskel, Drachenviereck
  • Deltamuskeltriangular muscle on the human shoulder
  • Drachenviereckkite
Hebrew דַּלְתּוֹן
  • דַּלְתּוֹן (daltón)kite
Hungarian deltaizom, deltoid
  • deltaizomtriangular muscle on the human shoulder
  • deltoidkite
Irish triantánach
  • triantánachbotany: of triangular shape
Japanese 三角筋, 三角靱帯
  • 三角筋 (sankakukin)triangular muscle on the human shoulder
  • 三角靱帯 (sankakujintai)triangular ligament on the human ankle
Korean 삼각근
  • 삼각근 (samgakgeun)triangular muscle on the human shoulder
Latin musculus deltoides
  • musculus deltoidestriangular muscle on the human shoulder
Māori ua pokohiwi, ua pakahiwi
  • ua pokohiwitriangular muscle on the human shoulder
  • ua pakahiwitriangular muscle on the human shoulder
Polish deltoid
  • deltoidkite
Russian дельто́ид, дельтовидный
  • дельто́ид (dɛlʹtóid)kite
  • дельтовидный (delʹtovidnyj)of or connected with deltoid muscle
Spanish (músculo) deltoides, muñón
  • (músculo) deltoidestriangular muscle on the human shoulder
  • muñóntriangular muscle on the human shoulder
  • deltoidekite
  • deltoidesof or connected with deltoid muscle
  • deltoideoof or connected with deltoid muscle
Thai สี่เหลี่ยมรูปว่าว
  • สี่เหลี่ยมรูปว่าว (sìi-lìiam-rûup-wâo)kite
Turkish deltoid
  • deltoidkite
Cite this entry
APA

deltoid. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/deltoid

MLA

“deltoid.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/deltoid. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “deltoid,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/deltoid.

Source: deltoid on Wiktionary, CC BY-SA 4.0.