Definition of pheno- in English:

pheno-

(also phen-)

combining form

  • 1Chemistry
    Derived from benzene.

    ‘phenobarbital’
  • 2Showing.

    ‘phenotype’

Origin

Pheno- (sense 1) from French phényle ‘phenyl’, from Greek phaino- ‘shining’; both senses from Greek phainein ‘to show’.