adj
binary
BEYE-nuh-rih
adj
1
Based on just two options, states, or values.
"The debate was framed as a binary choice between war and peace."
2
Relating to the base-2 number system, which uses only 0s and 1s.
"Computers store all data internally in binary."
noun
1
The base-2 number system itself.
"She converted the decimal number into binary for the assignment."
How to Use Binary
Learner’s notesIn plain EnglishInvolving exactly two options or values — most familiar from computing's 0s-and-1s number system.
Common mistake
Don't confuse "binary" (two states) with "biannual" (twice a year) or "biennial" (every two years).
Easily confused with
biannual
biennial
Common pairings
binary code
binary choice
binary system
Word Forms
more binary comparative, binaries plural, most binary superlative
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The debate was framed as a _____ choice between war and peace.
Etymology
From Late Latin bīnārius ("consisting of two"), from Latin bīnī ("two by two, a pair").