Dictionary

cell theory

noun

Definition of CELL THEORY

:  a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the sum of those of its cells

First Known Use of CELL THEORY

1859

cell theory

noun    (Medical Dictionary)

Medical Definition of CELL THEORY

:  a theory in biology that includes one or both of the statements that the cell is the fundamental structural and functional unit of living matter and that the organism is composed of autonomous cells with its properties being the sum of those of its cells

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