aggregation


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aggregation

 [ag″rĕ-ga´shun]
1. massing or clumping of materials together.
2. a clumped mass of material.
familial aggregation the occurrence of more cases of a given disorder in close relatives of a person with the disorder than in control families.
platelet aggregation platelet agglutination.

ag·gre·ga·tion

(ag-rĕ-gā'shŭn),
A crowded mass of independent but similar units; a cluster.
Synonym(s): agglomeration

aggregation

/ag·gre·ga·tion/ (ag″rĕ-ga´shun)
1. massing or clumping of materials or people together.
2. a clumped mass of material.

familial aggregation  the occurrence of more cases of a given disorder in close relatives of a person with the disorder than in control families.
platelet aggregation  a clumping together of platelets induced by various agents (e.g., thrombin) as part of the mechanism leading to thrombus formation.

aggregation

[ag′rəgā′shən]
Etymology: L, ad + gregare, to gather together
an accumulation of substances, objects, or individuals, as in the clumping of blood cells or the clustering of clients with the same disorder. aggregate, v.

Aggregation

Epidemiology A term of art referring to a lopsided distribution of parasites among hosts, with some hosts suffering a greater infestation than would be expected by chance alone.
Vox populi A massing of material; clumping.

ag·gre·ga·tion

(ag'rĕ-gā'shŭn)
A crowded mass of independent but similar units; a cluster.

aggregation

a clumping or clustering of individuals of a population in a non-random distribution. Such clumping can occur
  1. as a response to local habitat differences, e.g. some organisms preferring, say, damp to dry areas;
  2. as a response to daily or seasonal weather changes;
  3. by reproductive processes, e.g. individuals hatching from the same egg batch in some animals, or poor seed dispersal in plants;
  4. as a result of social attraction, e.g. colonial nesting in birds.

Aggregation

The blood cell clumping process that is measured in the platelet aggregation test.

aggregation

1. massing or clumping of materials together.
2. a clumped mass of material.

familial aggregation
the occurrence of more cases of a given disorder in close relatives of an animal with the disorder than in control families.
platelet aggregation
platelet agglutination.
References in periodicals archive ?
Subsequently, Health Canada issued medical device licences for Bio/Data's Platelet Aggregation Profiler[R] instruments and its vW Factor Assay[R] (von Willebrand Factor Assay).
I see a lot of similarities between the success of the SMS aggregation market, and the evolving LBS market.
MAX is also using other optical transport and aggregation equipment from Ekinops in their optical network.
Under the UNICAP aggregation rules, gross receipts from all the hospital's taxable subsidiaries are aggregated with the gross receipts from all hospital unrelated business activities to determine whether gross receipts exceed $10 million.
Ekinops is a provider of innovative optical transport, WDM and aggregation solutions for service providers and enterprise networks.
These findings may position TP-9201 as a novel platelet aggregation inhibitor and broaden the market opportunity by enabling treatment of indications in which bleeding caused by anti-thrombotics currently in use or under development puts patients at risk," said Donald W.
Cisco's ME 6500 series provides service providers with a cost-effective, feature-rich solution to address the Ethernet access and aggregation layers of Carrier Ethernet networks.
Ciena's DN 7000 series provides IP/MPLS-based pseudowire aggregation and switching and Ethernet interworking capabilities to support business data services and broadband aggregation applications, as carriers migrate legacy gear to Ethernet.
2044 nor its legislative history indicates that the estate of the second spouse to die is the owner of QTIP assets for aggregation purposes, the court would not apply aggregation.
This book fills such a need by providing an overview on the causes, consequences, characterization, and control of the aggregation of therapeutic proteins.
Current aggregation technology is based on having customers share their personal account passwords with aggregation providers, making it difficult for financial institutions like Bank of America to differentiate customers from aggregation providers and audit the overall process," said Chauncey Smith, senior vice president for eCommerce at Bank of America.
He defined aggregation as the ability to centrally manage and share storage among heterogeneous hosts.