The word "expedientially" is spelled with an "i" after the "d" instead of the more common "e". This is because the word is derived from "expedient", which is pronounced with a short "i" sound. When "expedient" is turned into an adverb, the "i" sound is retained and the "e" is dropped. Therefore, "expedientially" is pronounced /ɛksˌpiːdɪˈɛnʃəli/ with the emphasis on the third syllable. Its meaning refers to something that is done in a convenient, efficient, or practical way.
The word "expedientially" is derived from the root word "expedient", which can be traced back to the Latin word "expedire". "Expedire" is a combination of the Latin prefix "ex-" meaning "out of" or "from", and the word "pes, pedis" meaning "foot". The original meaning of "expedire" in Latin was "to set free" or "to make ready". Over time, the meaning of "expedient" evolved to refer to something that is advantageous, practical, or helpful in achieving a particular goal or purpose.
The formation of the adverb "expedientially" follows the regular pattern of adding the suffix "-ally" to the adjective "expedient". This allows the creation of an adverb that describes the manner in which something is done expediently or the effect of being expedient.