What is "stilbenoid"

n. Any of various secondary products of heartwood formation in trees, hydroxylated derivatives of stilbene that are capable of acting as phytoalexins.

Stilbenoids are hydroxylated derivatives of stilbene. They have a C6-C2-C6 structure. In biochemical terms, they belong to the family of phenylpropanoids and share most of their biosynthesis pathway with chalcones. Stilbenoids can be produced by plants and bacteria.