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| a mass of protoplasm found in most cells, directing their growth, metabolism, reproduction, and functioning in the transmission of genic characters |
| the usual major subdivision of a family or subfamily in the classification of organisms, usually consisting of more than one species |
aggregation ag·gre·ga·tion (āg'rĭ-gā'shən)
n.
A massing together or clustering of independent but similar units, such as particles, parts, or bodies.