Reproduction involving the union or fusion of a male and a female gamete WordNet 3.0 & Open English WordNet

Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete with a single set of chromosomes combines with another gamete to produce a zygote that develops into an organism composed of cells with two sets of chromosomes. Wikipedia

A process of combining and mixing genetic traits, associated with the generation of new individuals, by means of meiosis and fertilization Wikipedia Disambiguation

Reproduction process that creates a new organism by combining the genetic material of two organisms Wikidata

A union that results in increasing genetic diversity of the offspring. It is characterized by two processes: meiosis, involving the halving of the number of chromosomes; and fertilization, involving the fusion of two gametes and the restoration of the original number of chromosomes. During meiosis, the chromosomes of each pair usually cross over to achieve genetic recombination. OmegaWiki

The union of a male and female gamete. Wiktionary

The process whereby a new organism is created by combining the genetic material of two organisms. Wiktionary

Process whereby a new organism created by combining the genetic material of two organisms. Wiktionary (translation)