The process whose specific outcome is the progression of a semi-lunar valve over time, from its formation to the mature structure. [ http://purl.obolibrary.org/obo/go/references/0000094 GOC:TermGenie GOC:BHF http://www.ncbi.nlm.nih.gov/pubmed/19409885 GOC:rl ]

Synonyms: semilunar valves development semilunar valve development

This is just here as a test because I lose it