A lesion from which a malignant tumor is presumed to develop in a significant number of instances and that may or may not be recognizable clinically or by microscopic changes in the affected tissue.

Nearby words

  1. prebuttal,
  2. prec.,
  3. precalculus,
  4. precambrian,
  5. precancel,
  6. precancerous,
  7. precapillary,
  8. precariat,
  9. precarious,
  10. precariously

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.