Ileocecal means pertaining to the ileum and the cecum,  
and where those two parts are joined. The ileum is the 
last, longest, and narrowest of the three parts that make 
up the small intestine. The intestine is a tube shaped  
structure that is part of the digestive tract. The small 
intestine is a part of the intestine that takes in all of the 
nutrients that the body needs.  The ileum is attached on 
the bottom end to the cecum, which is the first part of 
the large intestine. The large intestine absorbs moisture 
from the matter that is left after it is digested in the small 
anus. Excrete means to release from the body as waste. 
 
An example of how ileocecal is used in medical terminology is the ileocecal valve, which  
is a valve that connects the ileum of the small intestine and the cecum of the large  
intestine. See the picture above for a picture showing the ilececal valve location.
Ileocecal is also written as ileocaecal. 
Ileocecal comes from the Latin word "ileum" meaning "intestine," and the Latin word 
"caecus" meaning "blind." Put the two words together and you have "blind intestine."