johnny ray

Medical Dictionary

ray (rā)

  1. A narrow beam of light or other electromagnetic radiation.

  2. A narrow beam of particles, as a cathode.

  3. A structure or part having the form of a straight line extending from a point.

American Heritage
Medical Dictionary

Ray (rā), John. 1627-1705.

English naturalist who was the first to use anatomy to distinguish between specific plants and animals. He established the species as the basic classification of living things.

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