trypsin
Concise Oxford English Dictionary © 2008 Oxford University Press:
trypsin /ˈtrɪpsɪn/
▶noun a digestive enzyme which breaks down proteins in the small intestine, secreted by the pancreas as trypsinogen.
– derivatives
tryptic adjective.
tryptic adjective.
– origin C19: from Gk tripsis ‘friction’, from tribein ‘to rub’ (because it was first obtained by rubbing down the pancreas with glycerine), + -in1.
'trypsin' also found in these Oxford entries:

