Definition of explicit can be found in this link:
http://www.dictionary.com/browse/explicit
adjective
1.
fully and clearly expressed or demonstrated; leaving nothing merely implied; unequivocal:
explicit instructions; an explicit act of violence; explicit language.
2.
clearly developed or formulated:
explicit knowledge; explicit belief.
3.
definite and unreserved in expression; outspoken:
He was quite explicit as to what he expected us to do for him.
4.
described or shown in realistic detail:
explicit sexual scenes.
5.
having sexual acts or nudity clearly depicted:
explicit movies; explicit books.
6.
Mathematics. (of a function) having the dependent variable expressed directly in terms of the independent variables, as y = 3 x + 4.
Compare implicit (def 4).
