1. Parasites that live on the external parts of other animals.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• wctozoa,
• sctozoa,
• dctozoa,
• rctozoa,
• 4ctozoa,
• 3ctozoa,
• extozoa,
• evtozoa,
• eftozoa,
• edtozoa,
• ecrozoa,
• ecfozoa,
• ecgozoa,
• ecyozoa,
• ec6ozoa,
• ec5ozoa,
• ektozoa,
• ecthosoa,
• ecthozoa,
• Ectozou

• ecstasy,
• ectozoon,
• ectozoan.

The adjective form of the word "ectozoa" is "ectozoan".