Late 19th century; earliest use found in Journal of the Royal Microscopical Society. From German Phaeoplast from ancient Greek ϕαιός + German -plast; compare chromoplast and slightly later chloroplast.
Definition of phaeoplast in US English:
phaeoplast
noun
Botany
A chromoplast of a brown alga.
Origin
Late 19th century; earliest use found in Journal of the Royal Microscopical Society. From German Phaeoplast from ancient Greek ϕαιός + German -plast; compare chromoplast and slightly later chloroplast.