• airmass,
• armass,
• zir mass,
• sir mass,
• wir mass,
• qir mass,
• aur mass,
• ajr mass,
• akr mass,
• aor mass,
• a9r mass,
• a8r mass,
• aie mass,
• aid mass,
• aif mass,
• ait mass,
• ai5 mass,
• ai4 mass,
• air nass,
• air kass

The adjective form of "air mass" is "airmass".

The plural of the "air mass" can be the "air masses".

The singular of the "air mass" can be the "air mass".