appositional growth

growth (grōth)

1. a normal process of increase in size of an organism as a result of accretion of tissue similar to that originally present.

2. an abnormal formation, such as a tumor.

3. the proliferation of cells, as in a bacterial culture.

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appositional growth  growth by addition at the periphery of a particular part.

interstitial growth  that occurring in the interior of structures already formed.

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appositional growth

n.

Growth by the addition of new layers on those previously formed, characteristic of tissues formed of rigid materials.

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appositional growth,

an increase in size by the addition of new tissue or similar material at the periphery of a particular part or structure, as in the addition of new layers in bone and tooth formation. Compare interstitial growth.