ˈpälēˌēn noun
( -s )
Etymology: International Scientific Vocabulary poly- + -ene
: an organic chemical compound containing many double bonds ; especially : such a compound having the double bonds in a long aliphatic hydrocarbon chain (as in carotene or vitamin A)
• poly·enic | ̷ ̷ ̷ ̷|ēnik, -|en- adjective