"dilettante"

We had the Tokyo gubernatorial election yesterday. In this election, there were 14 candidates for the Governor of Tokyo. At last, the current governor "Ishihara" won the election. Here is a detailed results: http://www3.nhk.or.jp/senkyo/html/senk/13/skh1300.html

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(The following is my concern, which is not related to the election.)
In reviewing the candidates profile, I found an unfamiliar word "dilettate."
dilettante [noun] a person who does or studies sth but isn't serious about it and doesn't have much knowledge by Oxford English dictionary 2000.

In my French-Japanese dictionary, I found an example:

composer de la musique en dilettante

If we use English, we can translate it like:

compose the musical piece as one's hobby

If this word is used as plural form, we say "dilettanti" or "dilettantes." In considering the forms, I assume this word comes from latin language.

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According to this article:"ディレッタントが発展させた科学" (in Japanese), "dilettante" seemed to be a precious existence for science history.

But, I'm not sure he/she is talented as to the governor...