| 释义 |
tapeworm
\ˈ ̷ ̷ˌ ̷ ̷\ noun
Etymology: tape (I) + worm
: a worm (subclass Cestoda) that is parasitic as an adult in the alimentary tract of vertebrates including man and as larva in a great variety of vertebrates and invertebrates, that typically consists of an attachment organ usually with suckers, grooves, hooks, or other devices for adhering to the host's intestine followed by an undifferentiated growth region from which buds off a chain of segments of which the anterior members are little more than blocks of tissue, the median members have fully developed organs of both sexes, and the posterior members are degenerated to egg-filled sacs, that has no digestive system and absorbs food through the body wall, and that has a nervous system consisting of ganglia and commissures in the scolex and longitudinal cords extending the length of the strobila — see beef tapeworm, fish tapeworm, pork tapeworm; compare echinococcus |