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Abbreviation: HMS
  1. His or Her Majesty's Ship
Noun: hm  hm
Usage: Brit
  1. A metric unit of length equal to 100 meters
    "The race course was three hms long";
    - hectometer [US], hectometre [Brit, Cdn]

Type of: metric linear unit

Part of: kilometer [US], kilometre [Brit, Cdn], klick [informal], km

Encyclopedia: HMS

Hm