01 n. In the broadest sense, a process or series of processes by which a living organism as a whole (or its component parts or organs) is maintai…
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1.
In the broadest sense, a process or series of processes by which a living organism as a whole (or its component parts or organs) is maintained in its normal condition of life and growth.(Physiol.)
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2.
In a more limited sense, the process by which the living tissues take up, from the blood, matters necessary either for their repair or for the performance of their healthy functions.(Physiol.)
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3.
That which nourishes; nutriment.“Fixed like a plant, on his peculiar spot, To draw nutrition, propagate, and rot.” — Pope.