| 释义 |
acephalocyst|əˈsɛfələʊsɪst|
[ad. mod.L. acephalocystis, f. Gr. ἀκέϕαλ-ος headless + κύστ-ις bladder.]
A headless bladder-worm; a name applied by Laennec to the group of parasitic worms known as hydatids. They are now ascertained to be the immature form (larva or scolex) of one of the tapeworms (Taeniadae), which, when it has quitted the egg, finds its way from the intestine to the liver or other solid organ of its host, and there enlarges into a globular cyst, while the head is inverted so as not to appear externally.
1836Todd Cycl. Anat. & Phys. II. 116/1 The Acephalocyst is an organized being, consisting of a globular bag..The young Acephalocysts are developed between the layers of the parent cyst. 1839Ibid. III. 196/1 The Entozoa met with in the human liver are hydatids or acephalocysts. 1862Fuller Dis. Lungs 307 In all instances in which acephalocysts are met with in the lungs, the issue of the case is extremely doubtful. |