sul·fide 
(sŭlfīd′)
(sŭlfīd′)n.
Divalent sulfur, or a compound of divalent sulfur with an electropositive element or group, especially a binary compound of sulfur with a metal.
- photometer
- photometric
- photometrical
- photometrically
- photometric brightness
- photometrist
- photometry
- photomicrograph
- photomicrographer
- photomicrographic
- photomicrography
- photomicroscope
- photomicroscopic
- photomontage
- photomultiplier
- photomural
- photomuralist
- photon
- photonegative
- photonic
- photonics
- photonuclear
- photo-offset
- photo op
- photo opportunity