1. responding positively to light; moving toward or attracted to light
Usage: technical; biology

1. an organism or substance that exhibits a positive response to light
Usage: technical; biology

Examples

• Many insects are photopositive and will fly toward a light source.
• The larvae showed a photopositive response when exposed to bright illumination.
• Certain algae are photopositive, orienting themselves to maximize light absorption.
• The experiment demonstrated that the organism was photopositive rather than photonegative.
• Photopositive bacteria migrate toward regions of higher light intensity.