cell
SEL
/sɛl/
The smallest structural and functional unit of an organism, typically microscopic and consisting of cytoplasm and a nucleus enclosed in a membrane.
Emphasizes the fundamental, self-contained unit of life, capable of independent existence or forming part of a larger organism.
The story behind the word. The word 'cell' comes from the Latin cella, meaning a 'small room' or 'chamber.' When Robert Hooke observed thin slices of cork under his primitive microscope in 1665, he noted the tiny, box-like compartments reminded him of the small rooms monks lived in, hence he named them 'cells.' This humble observation laid the foundation for modern biology.
Word relationships
- basic unit: More general, less scientific.
- fundamental component: Highlights its essential nature.
Word family
- cellular (adjective): Relating to or consisting of cells.
Collocations
- blood cell
- nerve cell
- plant cell
- animal cell
- stem cell
- cell division
Example sentences
- "Every living organism, from the smallest bacterium to the largest whale, is composed of one or more cells." Describing the basic unit of life.
- "The human body contains trillions of specialized cells, each performing unique functions vital for survival." Discussing cellular biology.
Memory hook
Think of a 'cell' as a tiny 'shell' that protects the basic building blocks of life. Tiny shell of life.
When not to use
Don't use 'cell' when referring to a battery, a prison cell, or a phone without clear context, as the biological meaning is specific.
Fun facts
- The largest known single cell is the ostrich egg, which can be seen with the naked eye.
- Humans are made of an estimated 37 trillion cells.
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