lithiasis noun.
[lɪ'Ɵʌɪǝsɪs] Pl. -ases
[-ǝsi:z].
M17.[medieval Latin from Greek, from lithos stone: see -IASIS.]Medicine. The formation of stony concretions or calculi in the body, esp. in the gall bladder or the urinary system.
[TahlilGaran] English Dictionary ▲