[mez-uh-thawr-aks, -thohr-, mes-, mee-zuh-, -suh-] /ˌmɛz əˈθɔr æks, -ˈθoʊr-, ˌmɛs-, ˌmi zə-, -sə-/

noun, plural mesothoraxes, mesothoraces
[mez-uh-thawr-uh-seez, -thohr-, mes-, mee-zuh-, -suh-] /ˌmɛz əˈθɔr əˌsiz, -ˈθoʊr-, ˌmɛs-, ˌmi zə-, -sə-/ (Show IPA)
the middle segment of the three divisions of the of an insect, bearing the second pair of legs and the first pair of wings.
noun (pl) -raxes, -races (-rəˌsiːz)
the middle segment of the thorax of an insect, bearing the second pair of walking legs and the first pair of wings See also prothorax, metathorax


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