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teras

(tĕr′əs)
n. pl. ter•a•ta (tĕr′ə-tə)
  1. A malformed fetus with deficient, redundant, misplaced, or misshapen parts.
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Related formste•rat′ic (tə-răt′ĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.