Definition: Trigem has a Hebrew root meaning "stem," which in context refers to the area surrounding the face, including the mouth, lips, tongue, and teeth. The term is often used figuratively or literally in reference to the part of the body that contains feelings (as in "feelings go right trigeminal") but can also be metaphorically referring to any part of the body where sensations originate (like the 'stomach' is a trigeminal region).