Dict: strongs - firmament

Strongs:

H7549 @ רקיע râqîya‛ raw-kee'-ah From H7554; properly an {expanse} that {is} the firmament or (apparently) visible arch of the sky: - firmament.

H7834 @ שׁחק shachaq shakh'-ak From H7833; a powder (as beaten small); by analogy a thin vapor; by extension the firmament: - {cloud} small {dust} {heaven} sky.