14-Letter Words Containing: P,E,T,A,S,I,T,E,S

• surgical removal of the stapes of the middle ear

• an enzyme produced by some strains of streptococcus that can liquefy blood clots by converting plasminogen to plasmin; used medicinally in some cases of myocardial infarction and pulmonary embolism

• a surgical procedure in which part or all of a damaged or diseased cornea is replaced by healthy corneal tissue from a donor

• fertilization of a second ovum after a pregnancy has begun; results in two fetuses of different ages in the uterus at the same time

• any of a class of drugs used to treat depression; often have undesirable side effects