A small pit or cavity in the surface of an organ or other structure.
Any of the genus Cryptopus of orchids of Madagascar and Mauritius.
Any of the genus Cryptocoryne of aquatic plants of southern and southeastern Asia.
An underground vault, especially one beneath a church that is used as a burial place.
The thickening of a membrane closing a wood-cell pit (as of gymnosperm tracheids) having the secondary cell wall arched over the pit cavity.
A rounded ridge of bone or muscle, especially one on the occipital bone.
{{lb|en|topology|in combination|n-torus|4-torus|etc.}} The product of the specified number of circles.
A topological space which is a product of two circles.
A large convex molding, typically semicircular in cross section, which commonly projects at the base of a column and above the plinth.
The end of the peduncle or flower stalk to which the floral parts (or in the Asteraceae, the florets of a flower head) are attached.
A ring-shaped object, especially a large ring-shaped chamber used in physical research.