Definition that contains upper surface
- ceiling the overhead upper surface of a covered space
- palate the upper surface of the mouth that separates the oral and nasal cavities
- dorsal belonging to or on or near the back or upper surface of an animal or organ or part
- spoiler a hinged airfoil on the upper surface of an aircraft wing that is raised to reduce lift and increase drag
- meniscus (physics) the curved upper surface of a nonturbulent liquid in a vertical tube
- right gastric vein receives veins from the upper surfaces of the stomach and empties into the portal vein
- discina macrospora a discina with a flat or saucer-shaped fertile body that is brown on the upper surface; has a short stalk; not recommended for eating
- scleroderma flavidium an earthball with a smooth upper surface that is at first buried in sand; the top of the fruiting body opens up to form segments like the ray of an umbel
- genus xenosaurus type and sole genus of Xenosauridae: slender-bodied Mexican lizards having the upper surface covered with tiny granules and tubercles
- northern casque-headed frog terrestrial burrowing nocturnal frog of grassy terrain and scrub forests having very hard upper surface of head; of the United States southwest