GMT

There are multiple definitions:

  1. geometric mean titer(English)

  2. good monitoring time(English)

  3. Greenwich Mean Time(English)

    • formely chosen as the world’s time standard. The reference line or starting point, the Prime Meridian, was determined to be the transit circle at the Royal Observatory in Greenwich, London. The transit circle is a part of the telescope's mechanics and it is still cited as the prime meridian's original reference (0° longitude)
    • UTC
    • Standards, Circadian rhythm
    • https://www.tim…e/aboututc.html
  4. gating modifier toxin(English)