polycystid Zool.
(pɒlɪˈsɪstɪd)
[f. mod.L. Polycystid-ea (neut. pl.), as polycystine: see -id.]
A member of the order Polycystidea of Gregarines, having the body divided into three (rarely two) segments.
| 1888 Rolleston & Jackson Anim. Life 858 A Polycystid possessing all three segments is known as a Cephalin or Cephalont. Ibid. 859 The Polycystids lose the epimerite wholly or in part. |