Definition of "phen" [phen]

• In chem., a prefix which shows that the substance designated is derived from benzene: as, 1,2-phendiol or pyrocatechol, and phenbutyldiol acid or phenyldihydroxybutyric acid. (noun)
• Abbreviations of Phenician. (noun)

The Century Dictionary (Public Domain)

• "The "phen" in fen-phen refers to a drug called phentermine, which wasn't banned."
• "'phen's, as Meffcr Buondclmonte was paffing the river on horfeback, without fear or fufpicion, (as if he thought the affront would have been as eafily for - gotten as the match had been broken) they fee upon vhim at the foot of the Bridge, and killed him, clofc by a Statue of Mars which then ftood there."
• "The FDA has shown a high bar for weight-loss drugs that would be taken indefinitely by millions of patients and the shadow of past failures — including the fen-phen combination that led to heart-valve problems in some patients — serves as a reminder that safety is the primary concern."