boundary line boundary layer • boundary point · · · Info · Definitions · Synonyms · Characters · · boundary line · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) a line that indicates a boundary. Synonyms: boundary line, border, borderline, delimitation, mete. · · Noun Definition 1 Synonyms · · · border · · Synonym 1 borderline · · Synonym 2 delimitation · · Synonym 3 mete · · Synonym 4 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 u latin small letter u U+0075 y latin small letter y U+0079