polycystidn.adj.

Brit.

/ˌpɒlɪˈsɪstɪd/, U.S.

/ˌpɑliˈsɪstɪd/

Origin: A borrowing from Latin. Etymon: Latin Polycystidea.

Etymology: < scientific Latin Polycystidea, former group name (1866 or earlier) < poly- poly- comb. form + ancient Greek κύστις bladder (see cyst n.) + scientific Latin -idea (see -id suffix³). Compare earlier polycystine n., polycystine adj. and monocystid n. With use as adjective compare also earlier polycystidan adj.

Zoology. Now disused.

A. n.

A parasitic protozoan of the former gregarine group Polycystidea (also called Cephalina), characterized by having the cell divided into protomerite, deutomerite, and usually also epimerite.

ΘΚΠ

the world > animals > invertebrates > protozoa > class Sporozoa > subclass Teleosporidia > [noun] > order Gregarinida > member of > member of suborder Polycystidea

polycystid1888

polycystidan1907

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 858 A Polycystid possessing all three segments is known as a Cephalin or Cephalont.

1905 Amer. Naturalist 39 612 As regards both form and anatomy the Polycystids are somewhat complicated animals.

B. adj.

Of, relating to, or designating such a protozoan.

ΚΠ

1905 Amer. Naturalist 39 612 The ectosarc of a Polycystid gregarine shows epicyte, sarcocyte, and myocyte.

1926 Sci. Monthly Apr. 344/1 A polycystid gregarine requires days of feeding and growth before it changes from the undifferentiated sporozoite to the differentiated adult form.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022).

单词	polycystid
释义	polycystidn.adj. Brit. /ˌpɒlɪˈsɪstɪd/, U.S. /ˌpɑliˈsɪstɪd/ Origin: A borrowing from Latin. Etymon: Latin Polycystidea. Etymology: < scientific Latin Polycystidea, former group name (1866 or earlier) < poly- poly- comb. form + ancient Greek κύστις bladder (see cyst n.) + scientific Latin -idea (see -id suffix³). Compare earlier polycystine n., polycystine adj. and monocystid n. With use as adjective compare also earlier polycystidan adj. Zoology. Now disused. A. n. A parasitic protozoan of the former gregarine group Polycystidea (also called Cephalina), characterized by having the cell divided into protomerite, deutomerite, and usually also epimerite. ΘΚΠ the world > animals > invertebrates > protozoa > class Sporozoa > subclass Teleosporidia > [noun] > order Gregarinida > member of > member of suborder Polycystidea polycystid1888 polycystidan1907 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 858 A Polycystid possessing all three segments is known as a Cephalin or Cephalont. 1905 Amer. Naturalist 39 612 As regards both form and anatomy the Polycystids are somewhat complicated animals. B. adj. Of, relating to, or designating such a protozoan. ΚΠ 1905 Amer. Naturalist 39 612 The ectosarc of a Polycystid gregarine shows epicyte, sarcocyte, and myocyte. 1926 Sci. Monthly Apr. 344/1 A polycystid gregarine requires days of feeding and growth before it changes from the undifferentiated sporozoite to the differentiated adult form. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2022). < n.adj.1888
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