Noun
peridinin (plural peridinins)
A light-harvesting carotenoid, a pigment related to chlorophyll that appears in the peridinin-chlorophyll-protein (PCP) light-harvesting complex in dinoflagellates.
The peridinin chloroplast is thought to be the dinophytes' "original" chloroplast, which has been lost, reduced, replaced, or has company in several other dinophyte lineages. Source: Internet
The peridinin chloroplast is bounded by three membranes (occasionally two), having lost the red algal endosymbiont's original cell membrane. Source: Internet