The qualities and characteristics of a male.
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mas·cu·lin·i·ty .mas-kyə-'lin-ət-ē n, pl -ties the quality, state, or degree of being masculine <measurement of \masculinity or femininity (Psychological Abstracts)>
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mas·cu·lin·i·ty (mas″ku-linґĭ-te) the possession of masculine qualities. Called also virility.Medical dictionary. 2011.