phototransistor phototransistors phototriangulation phototronic phototroph phototrophic phototrophic bacteria phototrophs phototrophy phototropic
| phototropic bacteria phototropically phototropin phototropism phototropisms phototropy (current term) phototube phototubes phototunable phototuning
| phototype phototypes phototypesetter phototypesetters phototypesetting phototypic phototypography phototypy photovaristor photovaristors
|