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I think if you are not narrowing the scope of the question to at least reference requests for some named philosophers/philosophical schools, this one will be closed due to being too broad or asking for a definition of a term. There in fact have been plenty definitions of this term throughout the history of philosophy.
Its kind of a shame that definition questions have to be off topic. While I understand why they are a poor fit for SE, this is a good philosophy question... just maybe not a good one for the site. It can be frustrating when people blindly assume their meaning for a fundamental word, like "description," must be universal, and quite refreshing to see someone questioning it.
Thanks for your comments. I will try to rephrase the question. Its my first post on the philosophy stackexchange, so I will try to adopt the appropriate question style. Thanks @CortAmmon for your encouraging words.