ex·crete 
(ĭk-skrēt)
(ĭk-skrēt)tr.v. ex·cret·ed, ex·cret·ing, ex·cretes
To separate and discharge (waste matter) from the blood, tissues, or organs.
[Latin excernere, excrēt- : ex-, ex- + cernere, to separate; see krei- in the Appendix of Indo-European roots.]