The Abundant Gas in Saturn's Atmosphere

This page is the CodyCross answer for the clue below from Airport, Group 446, Puzzle 4 (Moving Walkway).

Question is: The Abundant Gas in Saturn's Atmosphere

and the answer is: HYDROGEN

Word Meaning:

HYDROGEN — (uncountable) The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.008.

Definitions from Wiktionary.

The Abundant Gas In Saturn's Atmosphere - Airport CodyCross Answers | CodyCross Solutions