1. to make someone or something sensitive or more sensitive to something
Usage: British spelling
2. to make someone aware of and responsive to particular issues or situations
Usage: British spelling
3. to make a photographic film or plate sensitive to light
Usage: British spelling; photography

Examples

• The training programme aims to sensitise staff to cultural differences.
• Exposure to allergens can sensitise the immune system.
• The campaign helped sensitise the public to environmental issues.
• Repeated exposure may sensitise your skin to the chemical.
• The workshop will sensitise teachers to students’ learning difficulties.
• Certain medications can sensitise patients to sunlight.
• The film must be sensitised before it can capture images.