Sensitive

1. Having a capacity of being easily affected or moved; as, a sensitive thermometer; sensitive scales.
2. Having sense of feeling; possessing or exhibiting the capacity of receiving impressions from external objects; as, a sensitive soul.
3. Serving to affect the sense; sensible.
4. Having quick and acute sensibility, either to the action of external objects, or to impressions upon the mind and feelings; highly susceptible; easily and acutely affected.
5. Readily affected or changed by certain appropriate agents; as, silver chloride or bromide, when in contact with certain organic substances, is extremely sensitive to actinic rays.