What does the medical terminology combining form -tomy mean?

Answer 1

Surgical terms which refer to removal of a body part or internal organ end with, "ectomy." For example, the removal of a portion of a person's lung is referred to as a "lobectomy." The removal of one's adrenal glands (either the right or left adrenal gland) is called an "adrenalectomy." Removal of a kidney is termed as "nephrectomy."
ectomy

Answer 2

-otomy is surgical incision, so pericardotomy is surgical incision into the pericardium, and thoracotomy is surgical incision of the chest cavity.
cut
-tomy means surgical incision.
surgical incision
to cut out
to cut out
cutting but no removal

incision into

Answer 3

Your question is almost right. Here's the information you're looking for.

Medical suffixes:

• -tomy = cut + procedure (cut into)
• -ectomy = out + cut + procedure (removal)
• -ostomy = mouth + procedure (artificial opening/mouth)

Answer 4

-ectomy is a suffix that means surgical excision or removal.
The suffix means to "cut". An appendectomy means to cut (out) the appendix. Also surgically to remove.

Answer 5

-otomy means surgical incision; -ectomy means surgical removal.