Definition of phragmoplast in US English:

phragmoplast

(also phragmaplast)

noun

Botany
  • A set of microtubules which forms during mitosis in some plant cells, appearing as a barrel-shaped structure linking the two sets of chromosomes after they have separated to the poles, and lasting until the formation of the cell plate.

Origin

Early 20th century; earliest use found in The Botanical Gazette. From German Phragmoplast from ancient Greek ϕράγμα fence, screen + German -o- + -plast.