Pronunciation: [sˈɛskwɪtəʃˌi͡ənə͡l] (IPA) 
Sesquitertianal is a word that refers to something that is 1 1/2 thirds (or 3/2) of a year. It is a compound of the Latin words "sesqui", meaning "one and a half", and "tertius", meaning "third". The spelling of this word is complex and may be difficult to pronounce for many people. However, its IPA phonetic transcription is [sɛskwɪtərʃənəl], which can help in understanding how the word is pronounced.
Sesquitertianal is a term that is not widely recognized, and there is no official definition in most dictionaries. However, by breaking down the word into its components, one can attempt to create a definition.
"Sesqui-" is a prefix derived from Latin, meaning one and a half, or one and a half times. "Tertianal" does not have a widely accepted definition either, but "tertian" is an adjective that describes something occurring every third day or lasting for two days. Therefore, it is possible to infer that "sesquitertianal" could refer to an event or occurrence that takes place every three and a half days, or something that lasts for two and a half days.
It is important to note that this definition is purely speculative and not stemming from an established linguistic authority. Without any widely recognized usage or definition, the term "sesquitertianal" remains an obscure and ambiguous word. It is crucial to consider the context in which this term is used, as it may carry a specific meaning within a specialized field or have a colloquial usage in certain regions.
