1. In pharmacology, a small round container which is soluble and enclosing a dose of medicine that can be swallowed whole, or the container itself.
2. A fruit containing seeds that it releases by splitting open when it is dry and mature.
3. A sac containing the spores of a moss or a liverwort.
4. In microbiology, a gelatinous covering that surrounds some microorganisms.
5. A membrane or sac enclosing an organ or body part.
6. A layer of white fibers in the fore brain.
7. A sealed cockpit in an aircraft that can be ejected in an emergency; known as an ejectable cockpit.
8. A very brief summary or expressed in an extremely brief or highly condensed way.
9. A protective seal; such as, the metal, plastic, or wax covering that protects the cork of a wine bottle.
10. Etymology: from Latan capsula, "small boat or chest"; indicating smallness of capsa, "box, case, chest"; from Latin capere, "to take hold".

1. A reference to something that is significantly condensed or very brief: Tom's daughter gave him a capsule description of her trip.
2. Descriptive of a very small or compact item or situation: The tourists were given a very short, concise and capsule version of how to find their way to the harbor.

Janet put her pills into a very small and capsule container to fit into her purse.

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A two-layered sleeve or covering that surrounds freely moving joints (elbows, fingers, knees, etc.), where the inner layer is a clear, viscid lubricating fluid secreted by membranes in the joint cavities, sheaths of tendons, and where the outer part is fibrous or has threadlike structures; such as, a muscle fiber or a nerve fiber.

The embryonic (before birth) cartilaginous membranes (tough and thin elastic tissues) which enclose the inner developing ears of babies.

The cartilage capsule that surrounds the developing auditory vesicle and later fuses with the sphenoid (wedge-shaped) and occipital (back part of the head) cartilages.