flatworm. see Platyhelminthes Platyhelminthes, phylum containing about 20,000 species of soft-bodied, bilaterally symmetrical, invertebrate animals, commonly called flatworms.There are four classes: the free-living, primarily aquatic class, Turbellaria, and Trematoda, Cestoda, and Monogenea, which are.....ee Platyhelminthes Platyhelminthes, phylum containing about 20,000 species of soft-bodied, bilaterally symmetrical, invertebrate animals, commonly called flatworms.
Freebase(0.00 / 0 votes)Rate this definition: Pro rata. Pro rata is an adverb or adjective, meaning in proportion. The term is used in many legal and economic contexts. It is sometimes spelled pro-rata, but this is technically a misspelling of the Latin phrase. In North American English this term has been vernacularized to prorated.
Report Abuse. Pro-Rata basically means at that rate of salary. For example, if they offered you the job at Â£20,000/ Pro-Rata, but you were only working half the time in a week (20 Hours), then you would only get the equivalent of Â£10,000 a year.They use it as another term for part-time.ro-Rata basically means at that rate of salary. For example, if they offered you the job at Â£20,000/ Pro-Rata, but you were only working half the time in a week (20 Hours), then you would only get the equivalent of Â£10,000 a year.