monospermy

mon·o·sper·my

(mon'ō-sper'mē), Fertilization by the entrance of only one sperm into the oocyte. [mono- + G. sperma, seed]

monospermy

(mŏn′ō-spĕr″mē) [″ + sperma, seed] Fertilization by a single spermatozoon entering an ovum.