ex·pli·cate 
(ĕksplĭ-kāt′)
(ĕksplĭ-kāt′)tr.v. ex·pli·cat·ed, ex·pli·cat·ing, ex·pli·cates
To make clear the meaning of; explain. See Synonyms at explain.
[Latin explicāre, explicāt-, to unfold, explain : ex-, ex- + plicāre, to fold; see plek- in the Appendix of Indo-European roots.]
ex′pli·cation n.
expli·ca′tor n.