Source : WordNet®

fertilisation
     n 1: creation by the physical union of male and female gametes;
          of sperm and ova in an animal or pollen and ovule in a
          plant [syn: {fertilization}, {fecundation}, {impregnation}]
     2: making fertile as by applying fertilizer or manure [syn: {fertilization},
         {fecundation}, {dressing}]