Table of Contents > Health Dictionary > Invasion


1. The beginning or incursion of a disease. 2. Local spread of a malignant neoplasm by infiltration or destruction of adjacent tissue; for epithelial neoplasms, invasion signifies infiltration beneath the epithelial basement membrane. 3. Entrance of foreign cells into a tissue, such as polymorphonuclear leukocytes in inflammation.
Healthy Living Marketplace
Now Food
Jarrow Formulas
Natural Vitality
Now Food
Now Food