or fluid drachm
the eighth part of a fluid ounce. Abbreviation: fl dr; Symbol: f
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A unit of volume or capacity in the apothecary system, equal to 18 of a fluid ounce or 3.70 milliliters.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
A unit of liquid volume or capacity in the US Customary System equal to 18 of a fluid ounce (3.70 milliliters).
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.