1. characterized by gradual penetration or spreading into something
Usage: medical; military

Examples

• The doctor identified infiltrative cancer cells in the tissue sample.
• Infiltrative tactics allowed the special forces to enter enemy territory undetected.
• The infiltrative growth pattern made the tumor difficult to remove completely.
• Water damage showed an infiltrative pattern throughout the basement walls.
• The infiltrative nature of the disease required aggressive treatment.
• Infiltrative anesthesia was used to numb the surgical area.