binary

The word 'binary' has a direct and logical lineage from Latin. Its core, bin-, descends from the Latin bini, meaning "a pair, two each", which itself is derived from the Proto-Indo-European root dwo-, the ultimate source for words meaning "two" across many languages. The suffix -ary comes from the Latin adjectival ending -arius, which denotes connection or pertinence. Thus, the literal construction "relating to two" perfectly captures the modern abstract meanings, whether describing a dualistic system, a choice between two options, or the base-2 number system fundamental to computing, where all data is represented by just two digits.

Structure: bin (two) + ary (relating to) - bin: From Latin bini meaning "twofold, two each". It functions as the core root conveying the concept of "two". - ary: A suffix of Latin origin (-arius), forming adjectives meaning "of, relating to, or connected with". It functions as an adjectival suffix.