what is double fertilization
Definition of DOUBLE FERTILIZATION. : fertilization characteristic of seed plants in which one sperm nucleus fuses with the egg nucleus to form an embryo and another fuses with polar nuclei to form endosperm. ADVERTISEMENT. Britannica.com: Encyclopedia article about double fertilization. fertilization characteristic of seed plants in which one sperm nucleus fuses with the egg nucleus to form an embryo and another fuses with polar nuclei to form endosperm. ADVERTISEMENT. Britannica.com: Encyclopedia article about double fertilization.