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.
Step 4. Multiply the pro rata weekly wage by the number of weeks the part-time or short-term employee works in a year. If the part-time employee only works 36 weeks, multiply 36 times $375 to calculate a $13,500 pro rata annual salary.tep 3. Multiply the hourly wage by the number of weekly hours worked by a part-time or short-term employee. If the part-time employee works 20 hours per week, multiply 20 times $18.75 to calculate the pro rata weekly wage of $375. Step 4.