affinity

affinity definition - medical

af·fin·i·ty (ə-fĭnˈĭ-tē)

noun
  1. An attraction or force between particles that causes them to combine.
  2. The attraction between an antigen and an antibody.
  3. A relationship or resemblance in structure between species that suggests a common origin.
  4. The selective staining of a tissue by a dye.
  5. The selective uptake of a dye, chemical, or other substance by a tissue.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.