Chem. [mod. f. next + -INE.] A poisonous alkaloid, C20 H23 N3 O, extracted from the ripe seeds of the Laburnum, C. Laburnum, and other species of Cytisus.
1830. Lindley, Nat. Syst. Bot., 91. The seeds of the Laburnum are poisonous; they contain a principle called Cytisine.
attrib. 1878. trans. Ziemssens Cycl. Med., XVII. 825. Cytisine poisoning.