trophusn.

Brit.

/ˈtrəʊfəs/, U.S.

/ˈtroʊfəs/

Inflections: Plural trophi Brit.

/ˈtrəʊfʌɪ/,

/ˈtrəʊfi/, U.S.

/ˈtroʊˌfaɪ/,

/ˈtroʊfi/.

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

Etymology: < scientific Latin trophus (originally in plural form trophi ) (1813: see quot. 1813 at sense 1) < ancient Greek τροϕός feeder, rearer < an ablaut variant (o -grade) of the base of τρέϕειν to nourish (see tropho- comb. form).

1. Entomology. In plural. The mouthparts of an insect. Now rare.

ΘΚΠ

the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > head > mouth-parts or trophi

trophus1813

1813 W. Kirby in Trans. Linn. Soc. 11 102 I shall now say something on the remaining characters of the Stylopidæ, beginning with what Mr. Spence and myself..have denominated Trophi (Feeders).

1833 C. Lyell Princ. Geol. III. 277 The antennæ, tarsi and trophi are generally very obscure or distorted.

1897 Jrnl. N.Y. Entomol. Soc. 5 83 The trophi, i.e., the maxillæ and labium, are in Andrena a little shorter.

1979 Florida Entomologist 62 336 Pronotum, elytra, and abdomen pale castaneous..; legs and trophi pale ferruginous.

2. Zoology. A mouthpart or feeding organ in certain other invertebrates; spec. any of the rigid cuticular structures within the mastax of a rotifer, which are responsible for grabbing or grinding food. Frequently in plural.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [noun] > member of > mouth apparatus

trophus1873

1873 Trans. Linn. Soc. 28 498 The hindmost of the trophi, or oral organs, is single and symmetrical in Eurypterids.

1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 633 Class Rotifera... The mouth leads into an oesophagus, followed..usually directly by a muscular pharynx or mastax containing the chitinous jaw-apparatus or ‘trophi’... The shape of the ‘trophi’ is variable.

1938 Trans. Amer. Microsc. Soc. 57 157 The details of the foot, tail, trophi and toes are different.

1960 Crustaceana 1 106 Several hundred of these barnacles..were obtained... No appreciable change was detected in the chaetotaxis or trophi.

1979 Evolution 33 924/2 An evolutionary scheme based in part on the evolution of the reduced male and in part on the traditional evidence used in rotifer phylogeny (trophus morphology, number of ovaries, coronal morphology) is presented.

2007 Invertebr. Biol. 126 249/1 Fixed whole-mount specimens revealed the following characters of the trophus: slightly curved asymmetric manubria.., stout and long fulcrum.., and triangular rami.

This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).

单词	trophus
释义	trophusn. Brit. /ˈtrəʊfəs/, U.S. /ˈtroʊfəs/ Inflections: Plural trophi Brit. /ˈtrəʊfʌɪ/, /ˈtrəʊfi/, U.S. /ˈtroʊˌfaɪ/, /ˈtroʊfi/. Origin: A borrowing from Latin. Etymon: Latin trophus. Etymology: < scientific Latin trophus (originally in plural form trophi ) (1813: see quot. 1813 at sense 1) < ancient Greek τροϕός feeder, rearer < an ablaut variant (o -grade) of the base of τρέϕειν to nourish (see tropho- comb. form). 1. Entomology. In plural. The mouthparts of an insect. Now rare. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > head > mouth-parts or trophi trophus1813 1813 W. Kirby in Trans. Linn. Soc. 11 102 I shall now say something on the remaining characters of the Stylopidæ, beginning with what Mr. Spence and myself..have denominated Trophi (Feeders). 1833 C. Lyell Princ. Geol. III. 277 The antennæ, tarsi and trophi are generally very obscure or distorted. 1897 Jrnl. N.Y. Entomol. Soc. 5 83 The trophi, i.e., the maxillæ and labium, are in Andrena a little shorter. 1979 Florida Entomologist 62 336 Pronotum, elytra, and abdomen pale castaneous..; legs and trophi pale ferruginous. 2. Zoology. A mouthpart or feeding organ in certain other invertebrates; spec. any of the rigid cuticular structures within the mastax of a rotifer, which are responsible for grabbing or grinding food. Frequently in plural. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Rotifera > [noun] > member of > mouth apparatus trophus1873 1873 Trans. Linn. Soc. 28 498 The hindmost of the trophi, or oral organs, is single and symmetrical in Eurypterids. 1888 G. Rolleston & W. H. Jackson Forms Animal Life (ed. 2) 633 Class Rotifera... The mouth leads into an oesophagus, followed..usually directly by a muscular pharynx or mastax containing the chitinous jaw-apparatus or ‘trophi’... The shape of the ‘trophi’ is variable. 1938 Trans. Amer. Microsc. Soc. 57 157 The details of the foot, tail, trophi and toes are different. 1960 Crustaceana 1 106 Several hundred of these barnacles..were obtained... No appreciable change was detected in the chaetotaxis or trophi. 1979 Evolution 33 924/2 An evolutionary scheme based in part on the evolution of the reduced male and in part on the traditional evidence used in rotifer phylogeny (trophus morphology, number of ovaries, coronal morphology) is presented. 2007 Invertebr. Biol. 126 249/1 Fixed whole-mount specimens revealed the following characters of the trophus: slightly curved asymmetric manubria.., stout and long fulcrum.., and triangular rami. This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022). < n.1813
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