脊せき髄ずい空くう洞どう症しょうMeaningsNoun1. syringomyeliaKanji used脊backbone髄marrow空empty air洞cave症medical conditionComposed of脊せき髄ずいspinal cordNoun空くう洞どうcavity; hollow; cave; cavernNoun症しょうillness; condition; -pathySuffix