To make someone less likely to feel shock or distress at scenes of cruelty, violence, or suffering by overexposure to such images. The constant exposure to violent video games can desensitize young players to real-world violence.
To make someone or something less sensitive to a particular substance or stimulus, often through repeated exposure. The allergy treatment aims to desensitize patients to pollen by gradually increasing their exposure to it.
To decrease the responsiveness or sensitivity of a device, instrument, or material to a stimulus such as light, radiation, or sound. The technicians desensitized the microphone to reduce background noise during the recording.