Definitions

1. noun

Root mean square, a statistical measure that shows the magnitude of a varying quantity, especially a signal.

“The engineer used the rms value to measure the power consumption of the electrical circuit.”

2. abbr.

Royal Mail Ships, a British shipping company.

“The RMS Titanic was a passenger liner operated by the White Star Line, not the RMS.”

3. abbr.

Royal Mail Steamer, a type of passenger ship.

“The RMS Queen Mary was a British passenger liner that operated from 1936 to 1967.”