1. moving away from light; exhibiting negative phototropism
Usage: biology
2. relating to or producing a photographic negative
Usage: photography

Examples

• The photonegative bacteria moved away from the bright laboratory lights.
• Certain plant roots show photonegative growth, growing away from light sources.
• The photonegative response helps some organisms avoid harmful radiation.
• Photonegative materials are essential in traditional film photography.
• The researcher studied photonegative behavior in various microorganisms.
• Some fungi exhibit photonegative tropism in their natural habitat.