brachium

[brey-kee-uh m, brak-ee-] /ˈbreɪ ki əm, ˈbræk i-/
noun, plural brachia
[brey-kee-uh, brak-ee-uh] /ˈbreɪ ki ə, ˈbræk i ə/ (Show IPA)
1.
Anatomy. the part of the arm from the shoulder to the elbow.
2.
the corresponding part of any limb, as in the wing of a bird.
3.
an armlike part or process.
Origin
1725-35; < Neo-Latin; Latin brāc(c)hium the arm; compare Greek brachíōn, formally the comparative of brachýs short
Related forms
postbrachium, noun, plural postbrachia.
pseudobrachium, noun, plural pseudobrachia.
British Dictionary definitions for brachium

brachium

/ˈbreɪkɪəm; ˈbræk-/
noun (pl) -chia (-kɪə)
1.
(anatomy) the arm, esp the upper part
2.
a corresponding part, such as a wing, in an animal
3.
(biology) a branching or armlike part
Word Origin
C18: New Latin, from Latin bracchium arm, from Greek brakhiōn
brachium in Medicine

brachium bra·chi·um (brā'kē-əm, brāk'ē-)
n. pl. bra·chi·a (brā'kē-ə, brāk'ē-ə)

  1. The arm, especially between the shoulder and the elbow.

  2. An armlike structure.