Ucayali

American

[oo-kah-yah-lee] / ˌu kɑˈyɑ li /

noun

a river in W South America, flowing N from E Peru and joining the Marañón to form the Amazon. 1,200 miles (1,930 km) long.

Ucayali British

/ ukaˈjali /

noun

a river in E Peru, flowing north into the Marañón above Iquitos. Length: 1600 km (1000 miles)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The landslide was caused by "erosion" of the bank of the Ucayali River - the headwater of the Amazon - the country's National Emergency Operations Center said on X.

From BBC • Dec. 1, 2025

The Kakataibo community of Peru's Ucayali region faces one of the most uncertain futures.

From Barron's • Oct. 27, 2025

At the Amazon border regions of Ucayali and Loreto, cultivation advanced 43% and 34% respectively, Figueroa said.

From Reuters • Jun. 26, 2023

In the Ucayali region, 37% of the candidates were Indigenous.

From Salon • Oct. 4, 2022

It flows first north-easterly, then north-westerly past Cuzco to the mouth of the Peren� tributary, thence east and north to its junction with the Ucayali at 10� 41′ S. lat., and 73� 34′ W. long.

From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023