βραχίων

From βρᾰχῠ́ς (brakhús, “short”) +‎ -ίων (-íōn), because the upper arm is shorter than the forearm.

βρᾰχῑ́ων • (brakhī́ōn) m (genitive βρᾰχῑ́ονος); third declension

1. the (upper) arm, the shoulder
2. (poetic) a symbol of strength

• πρυμνὸς βρᾰχῑ́ων (prumnòs brakhī́ōn, “shoulder”)

• Latin: bracchium

βρᾰχίων • (brakhíōn) m or f (neuter βρᾰχίον); third declension

1. comparative degree of βρᾰχῠ́ς (brakhús): shorter

• “βρᾰχίων”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press (noun)
• “βρᾰχίων”, in Liddell & Scott (1940) A Greek–English Lexicon, Oxford: Clarendon Press (adjective)
• “βραχίων”, in Liddell & Scott (1889) An Intermediate Greek–English Lexicon, New York: Harper & Brothers
• “βραχίων”, in Autenrieth, Georg (1891) A Homeric Dictionary for Schools and Colleges, New York: Harper and Brothers
• βραχίων in Bailly, Anatole (1935) Le Grand Bailly: Dictionnaire grec-français, Paris: Hachette
• βραχίων in Cunliffe, Richard J. (1924) A Lexicon of the Homeric Dialect: Expanded Edition, Norman: University of Oklahoma Press, published 1963
• βραχίων in the Diccionario Griego–Español en línea (2006–2024)
• G1023 in Strong, James (1979) Strong’s Exhaustive Concordance to the Bible
• βραχίων in Trapp, Erich, et al. (1994–2007) Lexikon zur byzantinischen Gräzität besonders des 9.-12. Jahrhunderts [the Lexicon of Byzantine Hellenism, Particularly the 9th–12th Centuries], Verlag der Österreichischen Akademie der Wissenschaften
• Woodhouse, S. C. (1910) English–Greek Dictionary: A Vocabulary of the Attic Language‎, London: Routledge & Kegan Paul Limited, page 40
• Beekes, Robert S. P. (2010) “βραχίων, -ονος”, in Etymological Dictionary of Greek (Leiden Indo-European Etymological Dictionary Series; 10), with the assistance of Lucien van Beek, Leiden, Boston: Brill, →ISBN, page 236