Meaning of diversity...

OXFORD DICTIONARY MEANING OF DIVERSITY

noun (plural diversities)

[mass noun]

• the state of being diverse:there was considerable diversity in the style of the reports
•  [in singular] a range of different things:newspapers were obliged to allow a diversity of views to be printed

Origin:

Middle English: from Old French diversite, from Latin diversitas, from diversus 'diverse', past participle of divertere 'turn aside' (see divert)

(http://www.oxforddictionaries.com/definition/english/diversity)