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Webster 1913 Edition
Mesonotum
‖
Mesˊo-no′tum
,Noun.
 [NL., fr. Gr. 
μέσοσ 
middle + νῶτον 
the back.] (Zool.) 
The dorsal portion of the mesothorax of insects. 
Definition 2025
mesonotum
mesonotum
English
Noun
mesonotum (plural mesonota)
- (zoology) The dorsal portion of the mesothorax of insects.