dorsulumn.
Etymology: modern Latin, diminutive of dorsum back.Previous versions of the OED give the stress as: ˈdorsolum.
Entomology.
1826 W. Kirby & W. Spence (1828) III. xxxv. 547 The anterior margin of the dorsolum is deflexed.
This entry has not yet been fully updated (first published 1897; most recently modified version published online September 2021).