con·sul·tant 
(kən-sŭltənt)
(kən-sŭltənt)n.
1. One who gives expert or professional advice.
2. One who consults another.
con·sultant·ship′ n.
- 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
- photoperiod
- photoperiodic
- photoperiodism
- photophilic