subdeltoidadj.
/ˌsʌbˈdɛltɔɪd/, U.S. /ˌsəbˈdɛlˌtɔɪd/ 1. Chiefly Botany. Nearly or approximately deltoid in shape (see deltoid adj. 1a).
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1818 A. Eaton Man. Bot. (ed. 2) ii. 355 Leaflets oblong-oval, subdeltoid, obtusish.
1821 J. Sowerby Mineral Conchol. Great Brit. III. 171 Isocardia minima... Globose, subdeltoid; anteriorly slightly truncated, posteriorly flattened.
1862 W. J. Hooker Garden Ferns facing plate 39 Primary pinnae supposite, broad-ovate, subdeltoid, petiolate.
1917 Amer. Jrnl. Bot. 4 616 Calyx not fusiform, split into subdeltoid or linear-lanceolate, acute lobes.
1941 Amer. Midland Naturalist 25 674 Internasals paired, subdeltoid.
2001 Amer. Fern Jrnl. 91 11 Lamina subdeltoid, bipinnate.
2. Anatomy. Located beneath the deltoid muscle (see deltoid muscle at deltoid adj. 1b).
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1838 Amer. Med. Intelligencer 1 319 Revulsive vesicatories to the sub-deltoid region of the arm.
1873 Lancet 1 Mar. 307/1 The subdeltoid bursa of the shoulder-joint, which often enlarged and communicates with the joint itself.
1923 Brit. Med. Jrnl. 20 Jan. 97/2 With other more serious forms of subdeltoid bursitis we are of course familiar—such as tuberculous, gouty, or calcareous bursitis.
1978 Jrnl. Pediatrics 92 677/2 Needle aspiration of the subdeltoid region yielded frank greenish gray pus.
2002 R. R. Simon & B. E. Brenner Emergency Procedures & Techniques vii. 287 The optimal injection site for patients with subdeltoid bursitis or supraspinous tendonitis is at the point of maximal tenderness elicited on palpation beneath the acromial process.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).
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adj.1818