Pronunciation: (prō-trakt', pru-), [key]
1. to draw out or lengthen, esp. in time; extend the duration of; prolong.
2. Anat.to extend or protrude.
3. (in surveying, mathematics, etc.) to plot and draw (lines) with a scale and a protractor.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.