1. A tendency of a person to become upset about things that are done or said about him or her: Samuel was surprised by Silvia's extreme sensitivity about even the smallest suggestions that he made so she could successfully complete her class assignment.
2. An awareness and understanding of the feelings of other people: The police chief cautioned his officers about interviewing accident victims with sensitivity because they were already upset and fearful.

As a teacher, Mrs. White has shown a great sensitivity to the needs of her students.

3. The ability to express one's thoughts and feelings through writing, music, drama, etc.: Geraldine's singing is characterized by a rich emotional sensitivity that many appreciate very much.

An illness caused by radiation coming from cell phones, microwave or cell phone towers, radar, satellite, infrared, Wifi, GPS, RFID tags, computers, power lines, and other electrical equipment: "Individuals who are badly affected with EMF sensitivity suffer with headaches, insomnia, irritability, behavior disorders, autism, nerve and/or muscle pain, leukemia, tumors or cancer, heart attacks and other ailments."

"Certain population groups that have a tendency to suffer from elecromagnetic sensitivities include children, the elderly, and people with other illnesses."

"EMF Sensitivity is a highly controversial field of medicine; so, finding treatment for this illness is difficult, if not impossible, apparently because medical authorities do not consider electromagnetic fields a cause of the sicknesses as claimed by patients."

The rate of change in oscillator frequency with changes in electrode voltage or current for an electronically tuned oscillator.

Susceptibility or sensitivity to the damage of a circuit or an appliance to damage or destruction by electrostatic discharges.