The word "pleiotracheae" is a botanical term used to describe a family of plants. The spelling of this word can be explained using IPA phonetic transcription. Firstly, "pleio" is spoken as /pleɪəʊ/ which means "many" or "much". The second part of the word, "tracheae", is pronounced as /ˈtreɪki.i:/ which means "tubes" or "vessels". When combined, the word is pronounced as /ˌpleɪəʊˈtreɪki.i:/ with stress on the second syllable. It's important to pay attention to the phonetic symbols and stress patterns to ensure proper pronunciation of scientific terms.
In bot., spiral vessels with several fibres united.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.