what does the word essential means
Webster Dictionary(5.00 / 1 vote)Rate this definition: 1  Essential(adj) belonging to the essence, or that which makes an object, or class of objects, what it is. 2  Essential(adj) hence, really existing; existent. 3  Essential(adj) important in the highest degree; indispensable to the attainment of an object; indispensably necessary.