Skip to main content
MST

MST

2 3.4
The standard time in North America's Mountain Time Zone, seven hours behind UTC
  • noun
  • US
translation icon : MST
  • She always checks the time difference before calling her friend in MST.
  • MST program
  • MST effectiveness
  • MST treatment

Examples

  • In the United States, the acronym MST is often used as a synonym for MEMS—microelectromechanical systems.

    Academic text (1997)
  • The meeting is set for 10 a.m. MST, so please be on time.

  • You can watch the premiere of Red Sand online at 4 PM MST on YouTube.

    Blog text (5)
  • When planning my trip, I noticed that flights were cheaper at 3 p.m. MST.

Synonyms

1 3.1

A time zone seven hours behind Greenwich Mean Time used in US and Canadian mountain states

is the abbreviated form for that same standard time
Mountain Time
vsMST
  • US
1 3.8

Time used in parts of the United States and Canada, for example Denver

is given instead by its fixed offset seven hours behind UTC

Surface Forms

MST singular
MSTs plural

Etymology

MST is the short form of Mountain Standard Time, which means the 'standard' clock used in the 'mountain' region. Think of it like other time codes such as EST or PST, and in North America it is seven hours behind Coordinated Universal Time ('UTC').