An opening or perforation:
The shaft of a coal mine
The spontaneous disintegration of radioactive atoms with a resulting decrease in their number
(Games) Absence of cards of a particular suit in a dealt hand:
One of the narrow, usually branching tubes or supporting parts forming the framework of an insect's wing or a leaf. Veins in insect wings carry hemolymph and contain a nerve. Veins in leaves contain vascular tissue, with the xylem usually occurring on the upper side of the vein (bringing in water and nutrients) and the phloem on the lower side (carrying away food).
A space left empty by the removal or absence of something usually found in it; void
(Geology) A circular depression on the flank of a volcano, caused by the collapse of a volcanic wall.
A slight hollow made in a surface by a blow or pressure
A pit; a hollow.
An enclosed space or compartment:
A naturally occurring underground hollow or passage, especially one with an opening to the surface of the Earth. Caves can form through a variety of processes, including the dissolution of limestone by flowing water, the differential cooling of volcanic magma (which occurs when the outside surface of the lava cools, but the inside continues to flow downwards, forming a hollow tube), or the action of wind and waves along a rocky coast.
A sac or saclike bodily cavity, especially one containing a viscous lubricating fluid and located between a tendon and a bone or at points of friction between moving structures.
(Anatomy) A body cavity or chamber, especially either of the upper chambers of the heart that receives blood from the veins and forces it into a ventricle.
A cavity or chamber, especially one in a bone.
An empty space; void or vacuum
(Anatomy) A pocket of embryonic tissue that is the beginning of an organ.
An opening, especially to a cavity or passage of the body; a mouth or vent.
A hole formed by excavating.
A reduction in physiological vigor or activity:
The definition of a shallow container which will hold liquids such as water, or a shallow, bowl-shapped depression on land filled with water, or when rock layers all tilt away from a center area.
Find another word for cavities. In this page you can discover 26 synonyms, antonyms, idiomatic expressions, and related words for cavities, like: sacs, hollows, holes, grottos, pits, decays, voids, veins, vacuua, sinks and pockets.