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- Tapeworm - n. - Any one of numerous species of cestode worms belonging to Taenia and many allied genera. The body is long, flat, and composed of numerous segments or proglottids varying in shape, those toward the end of the body being much larger and longer than the anterior ones, and containing the fully developed sexual organs. The head is small, destitute of a mouth, but furnished with two or more suckers (which vary greatly in shape in different genera), and sometimes, also, with hooks for adhesion to the walls of the intestines of the animals in which they are parasitic. The larvae (see Cysticercus) live in the flesh of various creatures, and when swallowed by another animal of the right species develop into the mature tapeworm in its intestine. See Illustration in Appendix.
- Measle - n. - A tapeworm larva. See 2d Measles, 4.
- Scolex - n. - The embryo produced directly from the egg in a metagenetic series, especially the larva of a tapeworm or other parasitic worm. See Illust. of Echinococcus.
- Tapeworm - n. - Any one of numerous species of cestode worms belonging to Taenia and many allied genera. The body is long, flat, and composed of numerous segments or proglottids varying in shape, those toward the end of the body being much larger and longer than the anterior ones, and containing the fully developed sexual organs. The head is small, destitute of a mouth, but furnished with two or more suckers (which vary greatly in shape in different genera), and sometimes, also, with hooks for adhesion to the walls of the intestines of the animals in which they are parasitic. The larvae (see Cysticercus) live in the flesh of various creatures, and when swallowed by another animal of the right species develop into the mature tapeworm in its intestine. See Illustration in Appendix.
- Cysticercus - n. - The larval form of a tapeworm, having the head and neck of a tapeworm attached to a saclike body filled with fluid; -- called also bladder worm, hydatid, and measle (as, pork measle).
- Measles - n. - The larvae of any tapeworm (Taenia) in the cysticerus stage, when contained in meat. Called also bladder worms.
- Echinococcus - n. - A parasite of man and of many domestic and wild animals, forming compound cysts or tumors (called hydatid cysts) in various organs, but especially in the liver and lungs, which often cause death. It is the larval stage of the Taenia echinococcus, a small tapeworm peculiar to the dog.
- Coenurus - n. - The larval stage of a tapeworm (Taenia coenurus) which forms bladderlike sacs in the brain of sheep, causing the fatal disease known as water brain, vertigo, staggers or gid.