Definition of silenes:
(n) :
(botany) Any of several plants of the genus Silene.
(n) :
(organic chemistry) an organosilene, a molecule containing a silicon atom doubly bonded to a carbon atom
(n) :
(inorganic chemistry) a silicon analog of alkenes containing at least one silicon-silicon double bond.
(n) :
(chemistry) a molecule containing a silicon atom which forms a double bond