Main Entry:

¹null

Pronunciation:

\ˈnəl\

Function:

adjective

Etymology:

Anglo-French nul, literally, not any, from Latin nullus, from ne- not + ullus any; akin to Latin unus one — more at no, one

Date:

circa 1567

1: having no legal or binding force : invalid2: amounting to nothing : nil3: having no value : insignificant4 a: having no elements <null set> b: having zero as a limit <null sequence> cof a matrix : having all elements equal to zero5 a: indicating usually by a zero reading on a scale when a given quantity (as current or voltage) is zero or when two quantities are equal —used of an instrument b: being or relating to a method of measurement in which an unknown quantity (as of electric current) is compared with a known quantity of the same kind and found equal by a null detector6: of, being, or relating to zero7: zero 1c