pol·y·sper·my 
(pŏlē-spûr′mē)
(pŏlē-spûr′mē)n.
The entry of several sperm into one ovum during fertilization.
pol′y·spermic adj.
- noninvolvement
- nonissue
- nonjoinder
- nonjudgmental
- nonjuring
- nonjuror
- nonleaded
- nonlinear
- nonlinearity
- nonliterate
- nonmarketable
- nonmetal
- nonmetallic
- nonmoral
- nonnegative
- nonnegotiable
- nonnuclear
- non-nucleoside analog
- non-nucleoside reverse transcriptase inhibitor
- no-no
- nonobjective
- nonobservance
- nonobservant
- nonobservantly
- non obstante