Definition
noun, plural: organisms
(Science: Biology)
An individual living thing that can react to stimuli, reproduce, grow, and maintain homeostasis. It can be avirus, bacterium, protist, fungus, plant or an animal.
Supplement
In biology, an organism is any contiguous living system (such as animal, plant, fungus, or micro-organism). In at least some form, all organisms are capable of response to stimuli, reproduction, growth and development, and maintenance ofhomoeostasis as a stable whole. An organism may either be unicellular (single-celled) or be composed of, as in humans, many trillions of cells grouped into specialized tissues and organs. The term multicellular (many-celled) describes any organism made up of more than one cell.
Word origin: Greek organon = instrument.
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