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). [
1913 Webster]
" These larvae live in the tissues of various living animals, and, when swallowed by a suitable carnivorous animal, develop into adult tapeworms in the intestine. See Measles, 4, Tapeworm."
[1913 Webster]