Replication may mean:

In biology:

• Self-replication, when a molecule (or any other pattern) makes a copy of itself
• DNA replication, the act of copying the genetic material of a cell (DNA) to a daughter cell
• Semiconservative replication, mechanism of DNA replication

Other:

• In finance option replication is the trading strategy used to ensure at a certain date the payoff of an option without trading this option.
• Replication (computer science), the use of redundant resources to improve reliability, fault-tolerance, or performance.
• In statistics, replication is repeating the creation of a phenomenon, so that the variability associated with the phenomenon can be estimated. Replications and repeated measurements are dealt with differently in statistical experimental design and analysis. Replications should not be confused with repeated measurements which refer literally taking several measurements of a single occurrence of a phenomenon.
• Reproducibility, in science

Replikation | שכפול (ביולוגיה)