Question

peripheral Like most good fourth-grade teachers, he had excellent peripheral vision, and the kids were convinced that he had eyes in the back of his head. pərˈɪfərəl

Accepted Answer

(1) Having to do with the outer edges, especially of the field of vision. (2) Secondary or supplemental. Your peripheral vision is the outer area of your field of vision, where you can still detect movement and shapes. It can be very valuable when, for instance, you're driving into Chicago at rush hour, especially when switching lanes. When people call an issue in a discussion peripheral, they mean that it's not of primary importance, and they're probably suggesting that everyone get back to the main topic. Peripheral is now also a noun: computer peripherals are the added components—printers, webcams, microphones, etc.—that increase a computer's capacities

word	peripheral
definition	(1) Having to do with the outer edges, especially of the field of vision. (2) Secondary or supplemental.
eg_sentence	Like most good fourth-grade teachers, he had excellent peripheral vision, and the kids were convinced that he had eyes in the back of his head.
explanation	Your peripheral vision is the outer area of your field of vision, where you can still detect movement and shapes. It can be very valuable when, for instance, you're driving into Chicago at rush hour, especially when switching lanes. When people call an issue in a discussion peripheral, they mean that it's not of primary importance, and they're probably suggesting that everyone get back to the main topic. Peripheral is now also a noun: computer peripherals are the added components—printers, webcams, microphones, etc.—that increase a computer's capacities
IPA	pərˈɪfərəl

Peripheral Outer Field Vision Back Edges Secondary Supplemental