Science Dictionary
ductile  [%PREMIUM_LINK%]     (dŭk'təl)  Pronunciation Key 
  1. Easily stretched without breaking or lowering in material strength. Gold is relatively ductile at room temperature, and most metals become more ductile with increasing temperature. Compare brittle, malleable.

  2. Relating to rock or other materials that are capable of withstanding a certain amount of force by changing form before fracturing or breaking.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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