Analysis of information sources in references of the Wikipedia article "Prymnesium" in English language version.
Prymnesium (Gr. prymnesion, stern-cable) is a single-celled flagellate.
proís < Cat. prois < VL. *prodesium < L. prymnēsium [...]
prymnesium: The post wherevnto the cable of a ship is tyed. The cable it selfe. [The post unto which the cable of a ship is tied; the cable itself.]