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.
Pro rata basically means wages are in proportion to hours worked. So a wage of Â£12,000 FULL TIME, (full time is classed as 39 hours) so for 20 hours, pro rata of Â£12,000 would be approximately half-so 20 hours a week would give yearly wage of Â£6,000.eport Abuse. Pro rata basically means wages are in proportion to hours worked. So a wage of Â£12,000 FULL TIME, (full time is classed as 39 hours) so for 20 hours, pro rata of Â£12,000 would be approximately half-so 20 hours a week would give yearly wage of Â£6,000. â¥ Bekka â¥ Â· 9 years ago.