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auxotonic

adjective
  1. (of muscle contraction) occurring against increasing force
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
auxotonic in Medicine

auxotonic

[ôk′sə-tŏn′ĭk]
adj.
  1. Relating to a muscle contracting to accommodate an increasing load.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.