The tissue of a stem or root that lies inward from the epidermis, but exterior to the vascular tissue.
The outer surface of a piece of flint.
The outer layer of an internal organ or body structure, such as the kidney or the brain.
A pocket of embryonic tissue that is the beginning of an organ.
A small sac or cyst or vacuole, especially one containing fluid. A blister formed in or beneath the skin, containing serum. A bleb.
(usually and especially) Such a blister that is less than 5 mm in diameter.
A small cavity formed in volcanic rock by entrapment of a gas bubble during solidification.
A membrane-bound compartment found in a cell.
A small sac filled with juice, one of many constituting the pulp of a fruit such as an orange, lemon, or grapefruit.