Definition of omikron:
(n) :
Alternative form of omikron; Alternative spelling of omicron.
(n) :
Alternative form of omicron. [(sometimes capitalized) The 15th letter of the Classical and Modern Greek alphabets (16th in Ancient and Old Greek), used in ordering lists as in naming (astronomy) the 15th star of a constellation or (epidemiology) the 15th discovered major variant of a disease.]