Crossword clue: the formation of a mental image of something that is not perceived as real and is not present to the senses
2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).
Possible answers
the formation of a mental image of something that is not perceived as real and is not present to the senses
the formation of a mental image of something that is not perceived as real and is not present to the senses