- mesobasisternum
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n. [Gr. mesos, middle; basis, bottom; sternon, chest](ARTHROPODA: Insecta)1. The basisternum of the mesothorax.2. In Diptera, maybe separated from the mesofurcasternum by a secondary line of inflection; see furcasternum.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.