anagen(redirected from anagen-telogen ratio)
Also found in: Medical.
The growth phase in the hair growth cycle during which a newly formed hair continues to grow. It is generally the longest phase and is followed by catagen.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.