|1.||any gradual increase in size, as through growth or external addition|
|2.||something added, esp extraneously, to cause growth or an increase in size|
|3.||the growing together of normally separate plant or animal parts|
|a. abnormal union or growing together of parts; adhesion|
|b. a mass of foreign matter collected in a cavity|
|5.||law an increase in the share of a beneficiary in an estate, as when a co-beneficiary fails to take his share|
|6.||astronomy the process in which matter under the influence of gravity is attracted to and increases the mass of a celestial body. The matter usually forms an accretion disc around the accreting object|
|7.||geology the process in which a continent is enlarged by the tectonic movement and deformation of the earth's crust|
|[C17: from Latin accretiō increase, from accrēscere. See |
accretion ac·cre·tion (ə-krē'shən)
Growth or increase in size by gradual external addition, fusion, or inclusion.
Increase by addition to the periphery of material of the same nature as that already present, as in the growth of crystals. Also called accrementition.
Foreign material, such as plaque or calculus, collecting on the surface of a tooth or in a cavity.
The growing together or adherence of body parts that are normally separate.
|accretion (ə-krē'shən) Pronunciation Key