a small sac; esp., the smaller of the two divisions of the membranous labyrinth of the inner ear
Origin of sacculeClassical Latin sacculus, diminutive of saccus, sack
nounpl. sac·cules also sac·cu·li
- A small sac.
- The smaller of two membranous sacs in the vestibule of the inner ear.
Origin of sacculeLatin sacculus, diminutive of saccus, bag; see sack1.