What is the meaning of -ena?

feminine singular of

feminine singular of

forms feminine nouns from adjectives

-ene

  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

an unsaturated hydrocarbon having at least one double bond; an alkene

an aromatic hydrocarbon based on benzene

a polymer derived from an alkene

a single-atom thick two-dimensional layer of atoms

definite plural form of -en

Forms the genitive plural of n-stem masculine and feminine nouns

Forms the weak genitive plural of adjectives

feminine singular of -eno

feminine of -eno

Source: wiktionary.org