binarity

[ bahy-nar-i-tee, -nair- ]
/ baɪˈnær ɪ ti, -ˈnɛər- /

noun Linguistics.

a principle of analysis requiring that a linguistic system, as a phonological, case, or semantic system, be represented as a set of binary oppositions.
Also bi·nar·ism [bahy-nuh-riz-uh m] /ˈbaɪ nəˌrɪz əm/.

Origin of binarity