The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane. Cells are the basic building blocks of all living things. noun
The human body is composed of trillions of cells, each with its own function.
Scientists study cell biology to understand how diseases like cancer develop.
A small room in which a prisoner is locked up or in which a monk or nun sleeps. noun
The prisoner spent years in a small, dark cell.
The monk retreated to his cell for meditation and prayer.
A device containing electrodes immersed in an electrolyte, used for generating current or for electrolysis. noun
The battery cell was replaced to ensure the device worked properly.
Solar cells convert sunlight into electricity.
A small group forming a nucleus of political activity, typically a secret, subversive, or terrorist group. noun
The spy was part of a covert cell operating within the city.
Authorities uncovered a terrorist cell planning an attack.
A small compartment, cavity, or bounded space, such as one of the spaces between the ribs of a ship. noun
The honeycomb is made up of numerous hexagonal cells.
The ship's hull was divided into several watertight cells.