A narrow confining room, as in a prison or convent. A small enclosed cavity or space, such as a compartment in a honeycomb or within a plant ovary or an area bordered by veins in an insect's wing. Biology The smallest structural unit of an organism that is capable of independent functioning, consisting of one or more nuclei, cytoplasm, and various organelles, all surrounded by a semipermeable cell membrane. Architecture See web. The smallest organizational unit of a centralized group or movement, especially of a political party of Leninist structure. Electricity A single unit for electrolysis or conversion of chemical into electric energy, usually consisting of a container with electrodes and an electrolyte; a battery. Also called electrochemical cell. Electricity A single unit that converts radiant energy into electric energy: a solar cell. A fuel cell. Computer Science A basic unit of storage in a computer memory that can hold one unit of information, such as a character or word. A geographic area or zone surrounding a transmitter in a cellular telephone system. A storm cell. A small humble abode, such as a hermit's cave or hut. A small religious house dependent on a larger one, such as a priory within an abbey. A box or other unit on a spreadsheet or similar array at the intersection of a column and a row. To store in a honeycomb. To live in or share a prison cell.