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unary

unary

9.9
A number system that uses one mark repeated for each number
  • noun
  • /ˈjunəˌrē/
  • Specialized
translation icon : unario
  • To understand unary operations, consider how the numeral one is represented simply by a single mark.

Examples

  • We don't want to write the number in unary, you know, just as a writing the number K as a sequence of K ones.

  • The E-R modeling representation was more effective for binary and simple ternary associations, but less effective for the modeling of unary associations, complex ternary associations, and primary keys.

    Academic text (1993)
  • The types of errors included reversing one-to-many associations, replacing many-to-many associations with one-to-many associations, and adding an additional data item to unary associations.

    Academic text (1993)
  • In the unary numeral system, the number five is represented by five consecutive symbols, such as five ones.

  • When using unary, a value of three translates to three symbols denoting one each in a sequence.

Synonyms

unary numeral system
vsunary
  • Specialized
9.9

A system that shows numbers by using one mark for each unit like tally marks

is the shorter label with the same technical meaning

Compounds

unary operation
  • Specialized
7.4

A math or computer action that uses one value

unary numeral system
  • Specialized
9.9

A system that shows numbers by using one mark for each unit like tally marks

Surface Forms

unary singular
unaries plural

Morphology

unary = un (semi-transparent) = un + ary

The meaning is somewhat transparent for those familiar with 'un-' as 'one' and '-ary' as 'relating to', but the technical mathematical sense is specialized.

Etymology

Unary comes from the Latin unus meaning 'one', the same root as English unit. Think of counting with tally marks: a unary number is written by repeating a single mark for each item, so the system literally counts by ones, which is why it is called unary.