[lip-uh-sohm, lahy-puh-]
  1. Cell Biology. a microscopic artificial sac composed of fatty substances and used in experimental research of the cell.

Origin of liposome

First recorded in 1905–10; lipo-1 + -some3
Related formslip·o·so·mal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for liposome


  1. a particle formed by lipids, consisting of a double layer similar to a natural biological membrane, enclosing an aqueous compartment
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

liposome in Medicine


[lĭpə-sōm′, līpə-]
  1. An artificial microscopic vesicle consisting of an aqueous core enclosed in one or more phospholipid layers, used to convey vaccines, drugs, enzymes, or other substances to target cells or organs.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.