Adjective Meaning in a Progressive Fashion

This page is the CodyCross answer for the clue below from Extraordinary Creatures, Group 1596, Puzzle 3 (Giant Isopod).

Question is: Adjective Meaning in a Progressive Fashion

and the answer is: LINEAR

Word Meaning:

LINEAR — Having the form of a line; straight or roughly straight; following a direct course.

Definitions from Wiktionary.