Rivulusn.

Brit.

/ˈrɪvjᵿləʃ/, U.S.

/ˈrɪv(j)ələs/

Forms: also with lower-case initial.

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

Etymology: < scientific Latin Rivulus, genus name (F. Poey ( Memorias sobre la historia natural de la isla de Cuba II. (1860) 307) < classical Latin rīvulus small stream, rivulet, small channel ( < rīvus stream (see rive n.³) + -ulus -ule suffix), with reference to the habitat in which the type species, R. cylindraceus, was found by Poey.

A genus of small tropical American killifishes (family Cyprinodontidae) of fresh and brackish waters; spec. the mangrove rivulus ( Rivulus marmoratus) which is capable of self-fertilization and of surviving considerable periods out of water; (also rivulus) a fish of this genus.

ΚΠ

1876 A. R. Wallace Geogr. Distribution of Animals II. iii. xiv Other genera of the same family being Haplochilus, Rivulus, and Girardinus, widely spread in the Neotropical region.

1917 W. T. Innes Goldfish Varieties & Trop. Aquarium Fishes 96 The Haplochilus mostly spawn at or near the surface on floating bushy plants. So do the Rivulus.

1952 G. F. Hervey & J. Hems Freshwater Trop. Aquarium Fishes 266 (heading) The Slender Rivulus. Native to Central America, from southern Mexico to Costa Rica.

2007 Hindustan Times (Nexis) 8 Nov. When small pools of water dried up, the rivulus settled into crab burrows.

This is a new entry (OED Third Edition, June 2010; most recently modified version published online March 2022).

单词	rivulus
释义	Rivulusn. Brit. /ˈrɪvjᵿləʃ/, U.S. /ˈrɪv(j)ələs/ Forms: also with lower-case initial. Origin: A borrowing from Latin. Etymon: Latin Rivulus. Etymology: < scientific Latin Rivulus, genus name (F. Poey ( Memorias sobre la historia natural de la isla de Cuba II. (1860) 307) < classical Latin rīvulus small stream, rivulet, small channel ( < rīvus stream (see rive n.³) + -ulus -ule suffix), with reference to the habitat in which the type species, R. cylindraceus, was found by Poey. A genus of small tropical American killifishes (family Cyprinodontidae) of fresh and brackish waters; spec. the mangrove rivulus ( Rivulus marmoratus) which is capable of self-fertilization and of surviving considerable periods out of water; (also rivulus) a fish of this genus. ΚΠ 1876 A. R. Wallace Geogr. Distribution of Animals II. iii. xiv Other genera of the same family being Haplochilus, Rivulus, and Girardinus, widely spread in the Neotropical region. 1917 W. T. Innes Goldfish Varieties & Trop. Aquarium Fishes 96 The Haplochilus mostly spawn at or near the surface on floating bushy plants. So do the Rivulus. 1952 G. F. Hervey & J. Hems Freshwater Trop. Aquarium Fishes 266 (heading) The Slender Rivulus. Native to Central America, from southern Mexico to Costa Rica. 2007 Hindustan Times (Nexis) 8 Nov. When small pools of water dried up, the rivulus settled into crab burrows. This is a new entry (OED Third Edition, June 2010; most recently modified version published online March 2022). < n.1876
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