pro-lifer

from WordNet (r) 3.0 (2006)

pro-lifer
    n 1: an advocate of full legal protection for embryos and
         fetuses; someone opposed to legalized induced abortion

from The Collaborative International Dictionary of English v.0.48

pro-lifer \pro-lif"er\, n.
   One who is opposed to voluntary abortion; one who is
   pro-life, especially an activist in the campaign to make
   abortion illegal.
   [PJC]