[ Named from E. Reissner, A German anatomist. ] (Anat.) The thin membrane which separates the canal of the cochlea from the vestibular scala in the internal ear. [ 1913 Webster ]
[すなやつめ;スナヤツメ, sunayatsume ; sunayatsume](n) (uk) Far Eastern brook lamprey (Lethenteron reissneri); sand lamprey (species found in the Northwest Pacific)[Add to Longdo]