notochord development (GO:0030903)

The process whose specific outcome is the progression of the notochord over time, from its formation to the mature structure. The notochord is a mesoderm-derived structure located ventral of the developing nerve cord. In vertebrates the notochord serves as a core around which other mesodermal cells form the vertebrae. In the most primitive chordates which lack vertebrae, the notochord persists as a substitute for a vertebral column.

References

gene ontology: GO:0030903