isthmus isthmoid • istiophorid · · · Info · Definitions · Synonyms · Characters · · isthmus · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a relatively narrow strip of land (with water on both sides) connecting two larger land areas. · · Noun Definition 1 (noun) a cord-like tissue connecting two larger parts of an anatomical structure. Synonyms: band. · · Noun Definition 2 Synonyms · · · band · · Synonym 1 Characters · · h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075