ex·ten·u·a·tion 
(ĭk-stĕn′y-āshən)
(ĭk-stĕn′y-āshən)n.
1. The act of extenuating or the condition of being extenuated; partial justification.
2. A partial excuse.
- photonegative
- photonic
- photonics
- photonuclear
- photo-offset
- photo op
- photo opportunity
- photoperiod
- photoperiodic
- photoperiodism
- photophilic
- photophilous
- photophobia
- photophobic
- photophore
- photophosphorylation
- photopia
- photopic
- photoplay
- photopositive
- photoproduct
- photoreaction
- photorealism
- photorealist
- photorealistic