phil·ter also phil·tre 
(fĭltər)
(fĭltər)n.
1. A love potion.
2. A magic potion or charm.
tr.v. phil·tered, phil·ter·ing, phil·ters also phil·tred or phil·tring or phil·tres
To enchant with or as if with a philter.
[French philtre, from Old French, from Latin philtrum, from Greek philtron, from philein, to love, from philos, beloved, loving.]
- photomontage
- photomultiplier
- photomural
- photomuralist
- photon
- photonegative
- photonic
- photonics
- photonuclear
- photo-offset
- photo op
- photo opportunity
- photoperiod
- photoperiodic
- photoperiodism
- photophilic
- photophilous
- photophobia
- photophobic
- photophore
- photophosphorylation
- photopia
- photopic
- photoplay
- photopositive