(Latin: internal organs; all that is under the skin, all parts in the body except flesh or muscles; entrails; any large interior organ in any of the three great cavities of the body; specifically, those within the chest; such as, the heart or lungs; or in the abdomen; such as, the liver, pancreas, and intestines; and in the head; such as, the brain)

(Latin: pipe; an abnormal passage or communication, usually between two internal organs, or leading from an internal organ to the surface of the body)

(Greek: entrails, intestines, viscera [internal organs collectively; especially, those in the abdominal cavity])