Secondary-recovery
noun
1.
extraction of oil or natural gas under artificially induced pressure after the natural flow has ceased.
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- Secondary-school
noun 1. a high school or a school of corresponding grade, ranking between a primary school and a college or university. secondary school noun 1. a school for young people, usually between the ages of 11 and 18
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secondary sensory nucleus n. See terminal nucleus.
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noun, Music. 1. a chord formed by superposition of three thirds upon any degree of the scale except the dominant.