pheno-

American  

especially before a vowel, phen-

1. a combining form meaning “shining,” “appearing, seeming,” used in the formation of compound words.

   phenocryst.

2. a combining form used in the names of chemical compounds that contain phenol or the phenyl group, are related to aromatic compounds, or derive from benzene.

   phenobarbital.

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pheno- British  

combining form

1. showing or manifesting

   phenotype

2. indicating that a molecule contains benzene rings

   phenobarbital

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Etymology

Origin of pheno-

< New Latin phaeno- < Greek phaino- shining, combining form of phaínein to shine, appear; in chemical senses, used originally with reference to products from the manufacture of illuminating gas