What does omicron means?

Omicron is the 15th letter of the Greek alphabet, represented by the symbol "Ο" (uppercase) and "ο" (lowercase). In recent contexts, it is widely recognized as the name given to a variant of the SARS-CoV-2 virus, which causes COVID-19. Discovered in late 2021, the Omicron variant is noted for its mutations and increased transmissibility compared to previous strains.