from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. The dorsal part of the thoracic segment of an insect.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The back.

from the GNU version of the Collaborative International Dictionary of English

  • n. The back.

from The Century Dictionary and Cyclopedia

  • In entomology, the dorsal aspect of the thorax or of any thoracic segment. The notum is divided into pronotum, mesonotum, and metanotum.


New Latin nōtum, from Greek nōton, back.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek. (Wiktionary)



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