Essential to the whole (8)
I believe the answer is:
integral
(Other definitions for integral that I've seen before include "Unimpaired" , "Fundamental; function" , "Forming an essential part" , "Forming part of the whole" , "Triangle (anag)" .)
I believe the answer is:
integral
(Other definitions for integral that I've seen before include "Unimpaired" , "Fundamental; function" , "Forming an essential part" , "Forming part of the whole" , "Triangle (anag)" .)