What does "gmt" mean?

Initialism of gelatinous bone-marrow transformation.

Gmt

Common synonyms include: greenwich mean time, greenwich time, greenwich, greenwich time zone, slow time, time standard.

name, noun

name, noun ·Rare ·Advanced level

Noun

1
Initialism of gelatinous bone-marrow transformation. abbreviation, alt-of, initialism, uncountable
2
the local time at the 0 meridian passing through Greenwich, England; it is the same everywhere wordnet

Proper Noun

"Our website is offline for scheduled maintenance. We expect to be back online by 2:30 GMT."