echidninen.
/ɪˈkɪdnʌɪn/ Etymology: < Greek ἔχιδνα viper + -ine suffix5.
Chemistry.
1861 R. T. Hulme tr. C. H. Moquin-Tandon ii. v. ii. 284 Prince Lucien Bonaparte has shown that the poison of the Viper consists essentially of a principle to which he has given the name Echidnine or Viperine.
This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2018).