-ena

Etymology 1
From, from the feminine patronymic suffix.

Suffix

 * 1)  An unsaturated hydrocarbon having at least one double bond; an alkene.
 * 2)  An aromatic hydrocarbon based on benzene.
 * 3) A polymer derived from an alkene.
 * 1) A polymer derived from an alkene.

Etymology 2
From. Derived from graphene, expressing its monolayer characteristic.

Suffix

 * 1) a single-atom thick two-dimensional layer of atoms

Suffix

 * 1) definite plural form of -en