capsule

A membranous envelope.

A type of simple, dehiscent, dry fruit (seed-case) produced by many species of flowering plants, such as poppy, lily, orchid, willow and cotton.

A sporangium, especially in bryophytes.

The epidermal cells of the capsule wall of Jubulopsis, with nodose "trigones" at the angles, are very reminiscent of what one finds in Frullania spp.

A tough, fibrous layer surrounding an organ such as the kidney or liver

A membrane that surrounds the eyeball

To form (medicine, etc.) into capsules.

To encapsulate or summarize.