Ilovehate to be a party pooper, but even though the name Manus is masculine, the homonym manus (meaning hand or band o' men) is feminine. Manus's true nature--revealed!
By the way, Aum is an alternate transliteration of Om, the syllable usually used in Hindu chants. As for the complete meaning of Dr Aum, wiktionary might be more useful than wikipedia. *wink wink, nudge nudge, saynomore*