Name Osa Gender Feminine Usage English Pronounced Pron. O-zə, O-sə Edit Status Status Meaning & History Meaning unknown. This was the name of American explorer and documentary filmmaker Osa Johnson (1894-1953). In the case of Danish actress Osa Massen (1914-2006) it was apparently an Anglicized form of AASE, her birth name, a variant of ÅSE.
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