Breadcrumb Home > Thesaurus > I Synonyms of isthmus Find synonyms for: Noun 1. isthmus, land, dry land, earth, ground, solid ground, terra firma usage: a relatively narrow strip of land (with water on both sides) connecting two larger land areas 2. isthmus, band, tissue usage: a cord-like tissue connecting two larger parts of an anatomical structure WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of isthmus (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: procellous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language