sympiesometer /sim-pi-i-zomˈi-tər or -somˈ/

1. A barometer with a gas instead of a vacuum
2. An instrument for measuring the pressure of a current

• underactor
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• under-age
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• underagents
• under-and-over
• underarm
• under arms
• under arrest
• under bare poles
• underbear
• underbearer
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• underbearing
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• underbellies
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• underbid
• underbidder
• underbidders
• underbidding
• underbids