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isomorph

American  
[ahy-suh-mawrf] / ˈaɪ səˌmɔrf /

noun

  1. an organism that is isomorphic with another or others.

  2. an isomorphous substance.


isomorph British  
/ ˈaɪsəʊˌmɔːf /

noun

  1. a substance or organism that exhibits isomorphism

"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

Etymology

Origin of isomorph

First recorded in 1860–65; back formation from isomorphous