Also found in: Medical.
Variant of pheno-.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. a combining form meaning “shining,” “appearing, seeming”: 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.Also, esp. before a vowel, phen-.
[< New Latin phaeno- < Greek phaino- shining, comb. form of phaínein to shine, appear; in chemical senses, used orig. with reference to byproducts in manufacture of illuminating gas]
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