Pituitary rhymes with:
cemetery, cometary, dietary, dignitary, hereditary, interplanetary, military, monetary, nonmilitary, paramilitary, planetary, proprietary, salutary, secretary, solitary, tributary, unsanitary
Pituitary sounds like:
padre, padro, pater, patera, patrie, patry, patter, pedro, peter, petery, petr, petra, petre, petrea, petree, petrey, petri, petrie, petro, petrow, petru, petry, petter, pettry, pewter, phedra, piedra, pieter, pietro, piotter, pipetter, pitre, poetry, poitier, poitra, pothier, potier, potter, pottery, poudrier, pouter, poutre, powder, powdery, powter, puder, puppeteer, puppetry, putter, putterer