Pronunciation: (hī'du-tid), [key] Pathol.
1. a cyst with watery contents that is produced in humans and animals by a tapeworm in the larval state; cysticerus.
2. a cystic vestige of an embryonic feature.
1. Also,hy"da•tid'i•nous.of or pertaining to a hydatid.
2. containing or affected by hydatids.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.