lumbar puncture lumbar plexus • lumbar vein · · · Info · Definitions · Synonyms · Characters · · lumbar puncture · · Text Common · · Latin · · Scripts 15 · · Length 4 · · Syllables Definitions · · · (noun) removal by centesis of fluid from the subarachnoid space of the lumbar region of the spinal cord for diagnostic or therapeutic purposes. Synonyms: lumbar puncture, spinal puncture, spinal tap. · · Noun Definition 1 Synonyms · · · spinal puncture · · Synonym 1 spinal tap · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 l latin small letter l U+006C m latin small letter m U+006D n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075