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.
Answers. Best Answer: well per annum means per year. Pro rata means at that rate. So for example,if you work the full 37.5 hours per week for the full year you will earn Â£20,000 per annum, however if you end up working half of that you would earn Â£10,000.So if you only work 3months that is a 1/4 of Â£20,000, so you would earn Â£20,000/4 = Â£5,000.Source(s):ey, Can anyone help me understand what this means. If your salary will be Â£20,000 per annum pro rata what does this means? This is for full time work, 37.5 hrs per week, but only for 3 months.