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
- xenosaurus type and sole genus of Xenosauridae: slender-bodied Mexican lizards having the upper surface covered with tiny granules and tubercles
- roof of the mouth the upper surface of the mouth that separates the oral and nasal cavities
- epispadias a congenital abnormality in males in which the urethra is on the upper surface of the penis
- star earthball 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
- pternohyla fodiens terrestrial burrowing nocturnal frog of grassy terrain and scrub forests having very hard upper surface of head; of the United States southwest