Important to the Way It Works; Anagram of Triangle

This page is the CodyCross answer for the clue below from Airport, Group 458, Puzzle 1 (Controlled Airspace).

Question is: Important to the Way It Works; Anagram of Triangle

and the answer is: INTEGRAL

Word Meaning:

INTEGRAL — Constituting a whole together with other parts or factors; not omittable or removable.

Definitions from Wiktionary.

Important To The Way It Works; Anagram Of Triangle - Airport CodyCross Answers | CodyCross Solutions