• synonyms


[par-uh-bahy-oh-sis, -bee-]
noun Biology.
  1. experimental or natural union of two individuals with exchange of blood.
  2. Physiology. the temporary loss of conductivity or excitability of a nerve cell.
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Origin of parabiosis

First recorded in 1905–10; para-1 + -biosis
Related formspar·a·bi·ot·ic [par-uh-bahy-ot-ik, -bee-] /ˌpær ə baɪˈɒt ɪk, -bi-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for parabiotic


  1. the natural union of two individuals, such as Siamese twins, so that they share a common circulation of the blood
  2. a similar union induced for experimental or therapeutic purposes
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Derived Formsparabiotic (ˌpærəbaɪˈɒtɪk), adjective

Word Origin for parabiosis

C20: from para- 1 + Greek biōsis manner of life, from bios life
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

parabiotic in Medicine


  1. The fusion of whole eggs or embryos, as occurs in conjoined twins.
  2. Surgical joining of the vascular systems of two organisms.
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Related formspar′a•bi•otic (-ŏtĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.