in or near a center or constituting a center; the inner area; "a central position"
serving as an essential component;
a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication
defining rights and duties as opposed to giving the rules by which rights and duties are established; "substantive law"
basic and fundamental; "the essential feature"
of the greatest importance; "the all-important subject of disarmament"; "crucial information"; "in chess cool nerves are of the essence"
absolutely necessary; vitally necessary; "essential tools and materials"; "funds essential to the completion of the project"; "an indispensable worker"
being or relating to or containing the essence of a plant etc; "essential oil"
anything indispensable; "food and shelter are necessities of life"; "the essentials of the good life"; "allow farmers to buy their requirements under favorable conditions"; "a place where the requisites of water fuel and fodder can be obtained"
superlative form of huge: most huge
(of a clause) capable of standing syntactically alone as a complete sentence; "the main (or independent) clause in a complex sentence has at least a subject and a verb"
most important element;
of force; of the greatest possible intensity; "by main strength"
a principal pipe in a system that distributes water or gas or electricity or that collects sewage