Meaning

noun the property of being close together

noun the region close around a person or thing

noun a Gestalt principle of organization holding that (other things being equal) objects or events that are near to one another (in space or time) are perceived as belonging together as a unit

originFrom proxim(ate) + -ity, from Middle French proximité, from Latin proximitās, proximitāt-, from proximus.

Etymology from Wiktionary, CC BY-SA 3.0