rhinoceros

American  

[rahy-nos-er-uhs] / raɪˈnɒs ər əs /

noun

plural

rhinoceroses,

plural

rhinoceros

1. any of several large, thick-skinned, perissodactyl mammals of the family Rhinocerotidae, of Africa and India, having one or two upright horns on the snout: all rhinoceroses are endangered.

2. Douay Bible. unicorn.

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rhinoceros British  

/ ˌraɪnəʊsɪˈrɒtɪk, raɪˈnɒsərəs, -ˈnɒsrəs /

noun

1. any of several perissodactyl mammals constituting the family Rhinocerotidae of SE Asia and Africa and having either one horn on the nose, like the Indian rhinoceros ( Rhinoceros unicornis ), or two horns, like the African white rhinoceros ( Diceros simus ) They have a very thick skin, massive body, and three digits on each foot

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Usage

Plural word for rhinoceros The plural form of rhinoceros is rhinoceroses. The plurals of several other singular words that end in -s are also formed in this way, such as pass/passes, lotus/lotuses, and dress/dresses. In some words derived from Latin that end in -us, the irregular plural ending -i is used, as in fungus/fungi and cactus/cacti. Sometimes, for humorous effect or as an overcorrection, people apply the same kind of ending to rhinoceros (because it sounds like it ends in -us), as in rhinoceri. However, this is not a valid plural form of rhinoceros.

Other Word Forms

• rhinocerotic
  adjective

Etymology

Origin of rhinoceros

1300–50; Middle English rinoceros < Late Latin rhīnoceros < Greek rhīnókerōs, equivalent to rhīno- rhino- + -kerōs -horned, adj. derivative of kéras horn (of an animal)

Explanation

With its massive size, thick skin, and horned snout, the rhinoceros may look like a fearsome creature from a prehistoric world, but this powerful pachyderm is actually a herbivore found in Southeast Asia and Africa. Despite their tough and intimidating appearance, the diet of a rhinoceros consists primarily of grasses, leaves, and shoots rather than smaller animals. Sadly, the rhinoceros is an endangered animal due to illegal hunting and habitat loss. The rhinoceros plays a crucial role in its environment, contributing to the ecosystem by helping to shape the landscape with its grazing and promoting biodiversity with its presence.

Example Sentences

The research team created a plug-in for Rhinoceros, a popular NURBS-focused CAD program, allowing architects to use the approach within familiar software.

From Science Daily • Dec. 5, 2025

Rhinoceros poaching in South Africa is a serious issue that “The Last Ranger” puts into sharp focus, highlighting the dangers not just to the endangered animals but to the humans who try to protect them.

From Los Angeles Times • Feb. 12, 2025

Lastly, our journey takes us to Southeast Asia and the Indian subcontinent, where we encounter the Javan, Indian, and Sumatran Rhinoceros.

From Salon • Sep. 22, 2023

Aris Servetalis, a popular actor who starred in Ionesco's 1959 absurdist play "Rhinoceros", announced he was stepping down in an Instagram post late on Tuesday.

From Reuters • Nov. 24, 2021

At last he found them the place at the Unicorn, called by the Greeks, Rhinoceros.

From "The Once and Future King" by T. H. White