closed interval closed in • closed loop · · · Info · Definitions · Synonyms · Antonyms · Characters · · closed interval · · Text Common · · Latin · · Scripts 15 · · Length 4 · · Syllables Definitions · · · (noun) an interval that includes its endpoints. Synonyms: closed interval, bounded interval. · · Noun Definition 1 Synonyms · · · bounded interval · · Synonym 1 Antonyms · · · open interval · · Antonym 0 unbounded interval · · Antonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 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 s latin small letter s U+0073 t latin small letter t U+0074 v latin small letter v U+0076