biosafety level 4 biosafety level 3 • bioscience · · · Info · Definitions · Characters · · biosafety level 4 · · Text Common · · Latin · · Scripts 17 · · Length 7 · · Syllables Definitions · · · (noun) exposure to exotic infectious agents that pose a high risk of life-threatening disease and can be transmitted as an aerosol and for which there is no vaccine or therapy. Synonyms: biosafety level 4. · · Noun Definition 1 Characters · · space U+0020 4 digit four U+0034 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 v latin small letter v U+0076 y latin small letter y U+0079