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 (tə-wän′tə-pĕk′, tĕ-wän′tĕ-), Isthmus of
An isthmus of southern Mexico between the Bay of Campeche and the Gulf of Tehuantepec, a wide inlet of the Pacific Ocean.
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) Isthmus of Tehuantepec the narrowest part of S Mexico, with the Bay of Campeche on the north coast and the Gulf of Tehuantepec (an inlet of the Pacific) on the south coast
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(təˈwɑn təˌpɛk)

1. Isthmus of, an isthmus in S Mexico, between the Gulf of Tehuantepec and the Gulf of Campeche. 125 mi. (200 km) wide at its narrowest point.
2. Gulf of, an inlet of the Pacific, off the S coast of Mexico.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
Mexican Interior Secretary Olga Sanchez Cordero said earlier in the week that a caravan of migrants from Central America could be forming with more than 20,000 people, and she pledged to form a "containment" line around Mexico's narrow Tehuantepec Isthmus to stop migrants from continuing north.
The program includes around 9,000 km of data that extend from the Tehuantepec Basin of Southern Mexico to the Sandino Basin of Western Nicaragua and creates a calibrated data set.
The caravan of more than 1,000 migrants--mostly from the violent and tumultuous northern triangle of Central America: Guatemala, Honduras and El Salvador--was winding its way through the Isthmus of Tehuantepec in southern Oaxaca state April 2 when the Mexican government announced it would move to break up the mass movement of people through the country.
The Tehuantepec jackrabbit, Lepus flavigularis (Wagner, 1844), is a endemic species to Oaxaca, Mexico, whose distribution has been reduced to only four isolated populations with less than 1 000 individuals; so that has been listed as an endangered species (Lorenzo, Cervantes, Barragan, & Vargas, 2006; Smith, 2008; IUCN 2015; Lorenzo, Rioja-Paradela, & Carrillo-Reyes, 2015).
In the Gulf of Tehuantepec, there is only one antecedent that established the taxonomic composition and abundance of paralarval and juvenile cephalopods during summer and autumn of 2001 (Alejo-Plata et al., 2013), meanwhile the relation of this paralarval community to regional oceanography remains unknown.
Alejandro Murat, who announced the initiative in early March, said the project would provide shippers an efficient way to send their cargo between the Pacific and Atlantic oceans via the Isthmus of Tehuantepec, thus providing an alternative to the Panama Canal.