Φαντασία is the philosophic term for imagination or presentation, the mental faculty by which the object made apparent, φάντασμα, becomes apparent, φαίνεται.  Aristotle, de An. III. iii. 20 defines it as “a movement of the mind generated by sensation.”  Fancy, which is derived from φαντασία (φαίνω, ÖBHA=shine) has acquired a slightly different meaning in some usages of modern speech.