( a. )
Impossible to be otherwise, or to be dispensed with, without preventing the attainment of a desired result; indispensable; requiste; essential.
( a. )
Impossible to be otherwise, or to be dispensed with, without preventing the attainment of a desired result; indispensable; requiste; essential.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012