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A river of Venezuela flowing more than 2,415 km (1,500 mi), partly along the Colombia-Venezuela border, to the Atlantic Ocean. The mouth of the river was probably sighted by Columbus in 1498.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Placename) a river in N South America, rising in S Venezuela and flowing west, then north as part of the border between Colombia and Venezuela, then east to the Atlantic by a great delta: the third largest river system in South America, draining an area of 945 000 sq km (365 000 sq miles); reaches a width of 22 km (14 miles) during the rainy season. Length: about 2575 km (1600 miles)
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɔr əˈnoʊ koʊ, ˌoʊr-)

a river in N South America, flowing N from the border of Brazil through Venezuela to the Atlantic. 1600 mi. (2575 km) long.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Orinoco - a South American river 1,500 miles longOrinoco - a South American river 1,500 miles long; flows into the South Atlantic
Colombia, Republic of Colombia - a republic in northwestern South America with a coastline on the Pacific Ocean and the Caribbean Sea; achieved independence from Spain in 1821 under the leadership of Simon Bolivar; Spanish is the official language
Republic of Venezuela, Venezuela - a republic in northern South America on the Caribbean; achieved independence from Spain in 1811; rich in oil
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Through which country does the Orinocco run for most of its 1,000 miles?
Very messy, but great fun, Plaster Figures (pounds 12.95, Artstore) features moulds of Wombles favourites Tobermory, Orinocco, Bungo and Madame Cholet as well as paints to turn them into colourful characters.
W is for WOMBLES Uncle Bulgaria, Tomsk and Orinocco lived on Wimbledon Common and collected useful rubbish left behind by thoughtless humans.