What is the term used to describe the part of a glasses frame that connects the two lenses?

The term that describes the part of a glasses frame connecting the two lenses is the bridge. The bridge is the section of the frame that rests on the nose and serves to support the lenses in the correct position for proper vision. It plays a crucial role in the overall fit of the glasses, ensuring that the lenses are aligned with the eyes for optimal viewing and comfort.

The temple is another part of the frame, referring to the arms that extend back to the ears, and the lens holder is not a standard term used in eyewear nomenclature. Frame arms typically refer to the side elements of the glasses that connect the lenses to the earpieces. Hence, these terms do not pertain to the specific structure that holds and connects the lenses across the nose, making "bridge" the most accurate response for this question.