rajoidn.adj.

Brit.

/ˈreɪɔɪd/, U.S.

/ˈreɪɔɪd/

Forms: 1800s– raioid, 1900s– rajoid.

Origin: Formed within English, by derivation. Etymons: Raja n.², -oid suffix.

Etymology: < Raja n.² + -oid suffix. Compare earlier scientific Latin forms Raioidae (1861 or earlier), Rajoidei (1865 or earlier), Raioidea (1882 or earlier).

Zoology.

A. n.

A ray or skate, spec. one belonging to the superfamily Rajoidea or suborder Rajoidei.

ΘΚΠ

the world > animals > fish > subclass Elasmobranchii > order Hypotremata > [noun] > family Rajidae > member of family Rajidae (ray)

reighOE

roughlOE

rayc1350

flathec1440

rayfisha1500

Raja1633

centrine1661

flair1668

sea-cow1722

ox-ray1862

sea-devil1881

rajoid1890

the world > animals > fish > subclass Elasmobranchii > order Hypotremata > [noun] > family Rajidae > member of genus Raia (skate)

skatec1340

flathec1440

maid1569

maid-fish1665

flair1668

maiden-skatea1795

skate maid1836

tinker1836

flapper-skate1839

roker1860

rajoid1890

1890 Cent. Dict. Raioid, a selachian of the family Raiidæ or suborder Raiæ.

1979 Copeia No. 4. 772/2 Discussion topics included systematics of scorpaenoids, cottoids,..rajoids, larval fishes and far southern ocean fishes.

1986 Jrnl. Morphol. 189 225 The increased ampullary size and complexity observed in deep-sea rajoids provides mechanisms to increase both the sensitivity and signal-to-noise ratios.

B. adj.

Of, resembling, or designating a ray or skate, esp. of the superfamily Rajoidea or suborder Rajoidei.

ΚΠ

1890 Cent. Dict. Raioid, resembling or related to the ray or skate.

1977 Chesapeake Sci. 18 83/1 Within the rajoid fishes only rajiids and myliobatids have exhibited a white coloration.

1995 Arch. Fishery & Marine Res. 43 2 Field keys are provided to the five rajoid genera and 44 species.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	rajoid
释义	rajoidn.adj. Brit. /ˈreɪɔɪd/, U.S. /ˈreɪɔɪd/ Forms: 1800s– raioid, 1900s– rajoid. Origin: Formed within English, by derivation. Etymons: Raja n.², -oid suffix. Etymology: < Raja n.² + -oid suffix. Compare earlier scientific Latin forms Raioidae (1861 or earlier), Rajoidei (1865 or earlier), Raioidea (1882 or earlier). Zoology. A. n. A ray or skate, spec. one belonging to the superfamily Rajoidea or suborder Rajoidei. ΘΚΠ the world > animals > fish > subclass Elasmobranchii > order Hypotremata > [noun] > family Rajidae > member of family Rajidae (ray) reighOE roughlOE rayc1350 flathec1440 rayfisha1500 Raja1633 centrine1661 flair1668 sea-cow1722 ox-ray1862 sea-devil1881 rajoid1890 the world > animals > fish > subclass Elasmobranchii > order Hypotremata > [noun] > family Rajidae > member of genus Raia (skate) skatec1340 flathec1440 maid1569 maid-fish1665 flair1668 maiden-skatea1795 skate maid1836 tinker1836 flapper-skate1839 roker1860 rajoid1890 1890 Cent. Dict. Raioid, a selachian of the family Raiidæ or suborder Raiæ. 1979 Copeia No. 4. 772/2 Discussion topics included systematics of scorpaenoids, cottoids,..rajoids, larval fishes and far southern ocean fishes. 1986 Jrnl. Morphol. 189 225 The increased ampullary size and complexity observed in deep-sea rajoids provides mechanisms to increase both the sensitivity and signal-to-noise ratios. B. adj. Of, resembling, or designating a ray or skate, esp. of the superfamily Rajoidea or suborder Rajoidei. ΚΠ 1890 Cent. Dict. Raioid, resembling or related to the ray or skate. 1977 Chesapeake Sci. 18 83/1 Within the rajoid fishes only rajiids and myliobatids have exhibited a white coloration. 1995 Arch. Fishery & Marine Res. 43 2 Field keys are provided to the five rajoid genera and 44 species. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < n.adj.1890
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