accretion

(redirected from accretionary)
Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia.
Related to accretionary: accretionary growth, accretionary prism

accretion

 [ah-kre´shun]
1. growth by addition of material.
2. accumulation.
adherence of parts normally separated.

ac·cre·tion

(ă-krē'shŭn),
1. Increase by addition to the periphery of material of the same nature as that already present; for example, the manner of growth of crystals. Synonym(s): accrementition (2)
2. In dentistry, foreign material (usually plaque or calculus) collecting on the surface of a tooth or in a cavity.
3. A growing together.
[L. accretio, fr. ad, to, + crescere, to grow]

ac·cre·tion

(ă-krē'shŭn)
1. Increase by addition to the periphery of material of the same nature as that already present; e.g., the manner of growth of crystals.
2. dentistry Foreign material (usually plaque or calculus) collecting on the surface of a tooth or in a cavity.
3. A growing together of parts normally separate.
[L. accretio, fr. ad, to, + crescere, to grow]

ac·cre·tion

(ă-krē'shŭn)
In dentistry, foreign material (usually plaque or calculus) collecting on the surface of a tooth or in a cavity.
[L. accretio, fr. ad, to, + crescere, to grow]
References in periodicals archive ?
10c) and the accretionary complex began to grow, gradually forming a ridge that emerged above sea level leading to the creation of a retro-wedge basin separated from the oceanic trench (Fig.
As the leeward accretionary wedge developed, the subsequent surface was only drowned at exceptional high tides and became converted to sabkha as the accretion proceeded.
Otoliths are accretionary crystalline structures located within the inner ear of teleost fish.
The data suggest an antithetic relationship compared to the profile volume change described north of the revetment; the experimental structure apparently creates an accretionary fillet to the south during the summer months.
The fiscal institutions in pla ce generally reflect the results of an accretionary process of policy change over time, and the inertia inherent in such institutions must not be underestimated.
This mineral association frequently shows simple accretionary features, such as crustifications (e.g., analcime I, Ba-bearing phillipsite-Ca, gismondine, rarely gmeliniteCa) and development of well-defined crystals or fibrous aggregates of natrolite and phillip-site-Ca growing from the walls into open space.
The regional and local variations in till lithostratigraphy reflect the formation of drumlin fields during one or more glacial advances and/or an accretionary origin of drumlins (Goldstein 1989).
(ix) The recurrence of characters, situations, and themes in Fancydancing through Toughest Indian suggests that Alexie's work may be estimated most fairly in terms of its accretionary power, a salient feature of oral tradition.
Our initial installations were quite successful, and we and our growing group of CORK collaborators have gone on to deploy similar instrumentation in a total of 11 sites (see map opposite) in three representative types of seafloor hydrological environments: spreading centers, where new seafloor is spreading outward from mid-ocean ridges (ODP Holes 857D and 858G), young mid-ocean ridge flanks (395A, 1024C, 1025C, 1026B, 1027C), and accretionary prisms, where sediments scraped off descending seafloor plates accumulate in front of overriding plates, like debris in front of a locomotive's cowcatcher (889C, 892B, 948D and 949C).
As a protostar forms inside its dusty accretionary cradle, jets of material escape from the infant star's poles.
The Tuva-Mongol and South Gobi units possess Precambrian basements, whereas the Ozernaya, South Mongolian, Khangai-Khentei and composite Kharkhirin-West Sayan units comprise accretionary wedges and, commonly superimposed upon them, magmatic arcs no older than Vendian.
Kinematics of accretionary shell growth, with examples from brachiopods and molluscs.