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Schematic diagram showing meiosis where chromosome number is reduced by half. This is how the chromosome number in a life cycle changes from diploid (2n) to haploid (n).

(genetic biology)

Grammar: adjective
Definition: refers to a cell that has a pair of each chromosome

Compare haploid.
Example:
1. Meiosis must reduce the number of chromosomes from diploid to haploid (2n to n) to prevent the accumulation of DNA for every generation.

2. When sperm and egg fuse to form a new individual each gamete contributes a haploid (n) chromosome complement so that the newly formed embryo has a full diploid (2n) chromosome complement.