a. [ad. mod.L. subbrachiālis; see SUB- 1 b and BRACHIAL.]
1. Ichth. Situated under or near the pectoral fins; (of a fish) having the ventral fins so situated.
1836. Partingtons Brit. Cycl. Nat. Hist., II. 556/2. Gadoidæ. A family of soft-finned fishes with sub-brachial fins.
1840. Cuviers Anim. Kingd., 324. Echeneis. This genus, like Pleuronectes, might form a distinct family of Sub-brachial Malacopterygii.
2. Under the pectoral muscles.
1898. Syd. Soc. Lex.
3. Beneath the brachium (in cerebral anatomy).
1913. Dorland, Med. Dict. (ed. 7).