centra
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cen·tra
(sĕn′trə)n.
A plural of centrum.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
cen•trum
(ˈsɛn trəm)n., pl. -trums, -tra (-trə).
1. a center.
2. the body of a vertebra, the part cushioned by the spinal disk.
[1850–55; < Latin; see center]
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