The term "eye protrusion" refers to a bulging of the eyeball from its normal position within the eye socket. There are several synonyms for this medical condition which vary based on the cause and severity of the protrusion. One common term is exophthalmos, which is often associated with thyroid eye disease or tumors behind the eye. Another term is proptosis, which is a more general description of any forward displacement of the eye and can be caused by a variety of conditions including trauma or infection. Other less commonly used synonyms include bulging eyes, pop eye, or eyeball displacement. It is important to seek medical attention for any eye protrusion as it can lead to vision problems and potential complications.