dual
adjective
[ ˈdjuːəl ]
• consisting of two parts, elements, or aspects.
• "their dual role at work and home"
Similar:
double,
twofold,
binary,
duplicate,
duplex,
twin,
matched,
matching,
paired,
in pairs,
coupled,
binate,
• (of a theorem, expression, etc.) related to another by the interchange of particular pairs of terms, such as ‘point’ and ‘line’.
dual
noun
• a dual form of a word.
• a theorem, expression, etc., that is dual to another.
dual
verb
• convert (a road) into a dual carriageway.
• "though there are no plans to dual the road, a public consultation on the A64 is set to start before the end of the year"
Origin:
late Middle English (as a noun denoting either of the two middle incisor teeth in each jaw): from Latin dualis, from duo ‘two’.
