redian.

Brit.

/ˈriːdɪə/, U.S.

/ˈridiə/

Inflections: Plural rediae Brit.

/ˈriːdɪiː/,

/ˈriːdɪʌɪ/, U.S.

/ˈridiˌi/,

/ˈridiˌaɪ/, (rare) unchanged.

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

Etymology: < scientific Latin Redia, name of a supposed genus (F. de Filippi 1837, in Biblioteca Italiana 87 336) < the name of Francesco Redi (1626–98), Italian naturalist and poet + scientific Latin -a -a suffix¹.Although de Filippi coined Redia as a genus name, he himself later recognized that the organisms he had described were intermediate forms of another trematode ( Ann. Sci. Nat. (Zool.) (1854) 2 258). The singular form redia is occasionally seen with plural construction and meaning, perhaps by analogy with neuter plural family names in -a (see -a suffix²).

Zoology.

A form in the life cycle of many digenean trematodes (flukes), produced asexually within the main molluscan intermediate host from a germinal cell of the sporocyst, and having a saccular body containing a simple digestive tract and germinal cells that give rise to more rediae or to cercariae.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Platyhelminthes > [noun] > class Trematodes > member of > in asexual stage

redia1877

1877 T. H. Huxley Man. Anat. Invertebrated Animals iv. 203 The Redia, as this form is called, has a mouth and a simple caecal intestine, but no other organs.

1883 Science 27 Apr. 331/1 The free rediae force their way through the tissues of the host, and are found especially in the liver.

1931 D. B. Blacklock & T. Southwell Guide Human Parasitol. xvii. 144 Unlike all other digenetic trematodes, no rediae are produced at any time of the life history of the schistosomes.

1960 D. C. Braungart & R. Buddeke Introd. Animal Biol. (ed. 5) ix. 117/1 Once a single miracidium finds lodgement in a snail it can, through the multiplication of rediae, give rise to..a large number of cercariae.

2002 Integrative & Compar. Biol. 42 304/2 Cercariae emerge through a birth pore on the redia's surface and escape from the snail.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).

单词	redia
释义	redian. Brit. /ˈriːdɪə/, U.S. /ˈridiə/ Inflections: Plural rediae Brit. /ˈriːdɪiː/, /ˈriːdɪʌɪ/, U.S. /ˈridiˌi/, /ˈridiˌaɪ/, (rare) unchanged. Origin: A borrowing from Latin. Etymon: Latin Redia. Etymology: < scientific Latin Redia, name of a supposed genus (F. de Filippi 1837, in Biblioteca Italiana 87 336) < the name of Francesco Redi (1626–98), Italian naturalist and poet + scientific Latin -a -a suffix¹.Although de Filippi coined Redia as a genus name, he himself later recognized that the organisms he had described were intermediate forms of another trematode ( Ann. Sci. Nat. (Zool.) (1854) 2 258). The singular form redia is occasionally seen with plural construction and meaning, perhaps by analogy with neuter plural family names in -a (see -a suffix²). Zoology. A form in the life cycle of many digenean trematodes (flukes), produced asexually within the main molluscan intermediate host from a germinal cell of the sporocyst, and having a saccular body containing a simple digestive tract and germinal cells that give rise to more rediae or to cercariae. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Platyhelminthes > [noun] > class Trematodes > member of > in asexual stage redia1877 1877 T. H. Huxley Man. Anat. Invertebrated Animals iv. 203 The Redia, as this form is called, has a mouth and a simple caecal intestine, but no other organs. 1883 Science 27 Apr. 331/1 The free rediae force their way through the tissues of the host, and are found especially in the liver. 1931 D. B. Blacklock & T. Southwell Guide Human Parasitol. xvii. 144 Unlike all other digenetic trematodes, no rediae are produced at any time of the life history of the schistosomes. 1960 D. C. Braungart & R. Buddeke Introd. Animal Biol. (ed. 5) ix. 117/1 Once a single miracidium finds lodgement in a snail it can, through the multiplication of rediae, give rise to..a large number of cercariae. 2002 Integrative & Compar. Biol. 42 304/2 Cercariae emerge through a birth pore on the redia's surface and escape from the snail. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022). < n.1877
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