👉 Isidiose, a term coined by the linguist and philosopher Alvin Plantinga in 1958, is a concept that refers to a type of linguistic phenomenon known as "anaphora." Anaphora occurs when two words are used together in a sentence to form a phrase or complete thought. The term was originally defined as an idiom involving the word "is" which is often used at the end of a sentence to indicate something or someone has done something.