1. not showing a response or reaction to a stimulus or test
Usage: medical; scientific
2. chemically stable; not readily undergoing chemical reactions
Usage: chemistry
3. not responding emotionally or showing little emotional response

Examples

• The patient’s skin test was nonreactive, indicating no allergic response.
• Noble gases are generally nonreactive under normal conditions.
• The nonreactive coating protects the metal from corrosion.
• She remained nonreactive during the heated discussion.
• The nonreactive surface won’t interact with the chemicals.
• His nonreactive personality made him seem distant to others.
• The lab results showed a nonreactive blood sample.