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Meaning of posttension

post•ten•sion

Pronunciation: (pōst-ten'shun), [key]
— v.t.
  1. (in prestressed-concrete construction) to apply tension to (reinforcing strands) after the concrete has set. Cf. (def. 1).
  2. to make (a concrete member) with posttensioned reinforcement.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.