The word "polyscelia" refers to having multiple spleens. Its spelling can be explained using the International Phonetic Alphabet (IPA) as pɒliˈsiːliə. The first syllable, "pɒli", is pronounced with a short "o" sound and the stress is on the second syllable, "ˈsiːliə". The final "ia" is pronounced with a schwa sound, making the word difficult to spell phonetically. A condition of having multiple spleens is rare, but it can occur due to certain genetic disorders or as a result of a splenic injury.
A form of polymelia, the presence of more than two legs.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
There is no information available regarding the etymology of the word "polyscelia". It is possible that this word may be a coined term or a lesser-known, rare term specific to a particular field or discipline.