deltoid

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

• (UK) IPA^(key): /ˈdɛɫtɔɪd/

deltoid (plural deltoids)

1. (anatomy) The deltoid muscle, a triangular muscle on the human shoulder.

   Synonym: (slang) delt

2. (anatomy) The deltoid ligament, a triangular ligament on the human ankle.
3. (geometry) A kite (quadrilateral having two pairs of edges of equal length, the edges of each pair touching each other at one end).
4. (geometry) A deltoid curve (hypocycloid with three cusps).

deltoid (not comparable)

1. In the shape of the uppercase Greek letter delta (Δ); triangular.
   1. (botany, of leaves) Of a triangular or roughly triangular shape and attached to the stem via the side.
2. Of or pertaining to the deltoid muscle.

Borrowed from English deltoid.[1]

• IPA^(key): [ˈdɛltojid]
• Hyphenation: del‧to‧id
• Rhymes: -id

deltoid (plural deltoidok)

1. (geometry) kite (a quadrilateral having two pairs of edges of equal length, the edges of each pair being consecutive)

• deltoid in Bárczi, Géza and László Országh. A magyar nyelv értelmező szótára (‘The Explanatory Dictionary of the Hungarian Language’, abbr.: ÉrtSz.). Budapest: Akadémiai Kiadó, 1959–1962. Fifth ed., 1992: →ISBN
• deltoid in Ittzés, Nóra (ed.). A magyar nyelv nagyszótára (‘A Comprehensive Dictionary of the Hungarian Language’). Budapest: Akadémiai Kiadó, 2006–2031 (work in progress; published A–ez as of 2024)

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

• IPA^(key): /dɛlˈtɔ.it/

• Audio

  (file)

• Rhymes: -ɔit
• Syllabification: del‧to‧id

deltoid m inan

1. (geometry) kite

   Synonym: latawiec

• deltoid in Polish dictionaries at PWN

Borrowed from French deltoïde.

deltoid m or n (feminine singular deltoidă, masculine plural deltoizi, feminine and neuter plural deltoide)

1. deltoid

Borrowed from French deltoïde.

• IPA^(key): [deltojid]

deltoid (definite accusative deltoidi, plural deltoidler)

1. (geometry) kite