DCHP-1 Online
isletin [< F islet isle + E -in] 
n. an early name for insulin.
See also: insulin
- 1929 At the end of this time we had used up all the available supply of what we then called "isletin."
- 1959 The digestive enzymes of sweetbreads were too abundant to permit the isolation of the elusive isletin.
- 1929 At the end of this time we had used up all the available supply of what we then called "isletin."