1. (a.) Having sense of feeling; possessing or exhibiting the capacity of receiving impressions from external objects; as, a sensitive soul.

2. (a.) 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.

3. (a.) Having a capacity of being easily affected or moved; as, a sensitive thermometer; sensitive scales.

4. (a.) 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.

5. (a.) Serving to affect the sense; sensible.

6. (a.) of or pertaining to sensation; depending on sensation; as, sensitive motions; sensitive muscular motions excited by irritation.