Mesoarion is spelled with four syllables: /mɛsɒˈærɪˌɒn/. The first syllable is pronounced with a short "e" sound, followed by "so" and a short "a" sound. The second syllable contains a long "a" sound, followed by "ri" and another short "o" sound. The last two syllables are "on," pronounced with a short "o" sound and a slight emphasis on the final "n." This word is derived from Greek and refers to the middle portion of an arthropod's body.