Dictionary.com
Thesaurus.com

heterograft

American  
[het-er-uh-graft, -grahft] / ˈhɛt ər əˌgræft, -ˌgrɑft /

noun

Surgery.
  1. xenograft.


heterograft British  
/ ˈhɛtərəʊˌɡrɑːft /

noun

  1. a tissue graft obtained from a donor of a different species from the recipient

"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 heterograft

First recorded in 1905–10; hetero- + graft 1