1. The increase in the gauge length measured after fracture in tension within the gauge length, expressed in percentage of original gauge length. 2. The lengthening of a macromolecule; e.g., in the synthesis of long-chain fatty acid s or in the synthesis of a protein.
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elon·ga·tion (.)ē-.lȯŋ-'gā-shən n
1) the state of being elongated or lengthened also the process of growing or increasing in length <chain \elongation in DNA synthesis> <the \elongation of a muscle under tension>
2) something that is elongated
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elon·ga·tion (e″long-aґshən) 1. the act, process, or condition of increasing in length. 2. pathologic migration of a tooth in the occlusal or incisal direction. 3. radiographic distortion in which the image is proportionately longer than that which is being x-rayed.Medical dictionary. 2011.