biphasic pill
Also found in: Medical.
Related to biphasic pill: monophasic oral contraceptive
biphasic pill
n.
A drug, such as an oral contraceptive, in which the dosage level changes during the number of days it is taken.
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.