head·set 
(hĕdsĕt′)
(hĕdsĕt′)n.
A headphone or pair of headphones, usually equipped with a microphone.
headset- phototactic
- phototactically
- phototaxis
- phototherapeutic
- phototherapy
- phototonic
- phototonus
- phototoxic
- phototoxicity
- phototransistor
- phototroph
- phototrophic
- phototrophically
- phototropic
- phototropism
- phototube
- phototypesetter
- phototypesetting
- phototypography
- photovoltaic
- photovoltaic cell
- PHP
- phr.
- phragmites
- phrasal