That which comes from one's imagination.
A fantastical design.
The drug gamma-hydroxybutyric acid.
The literary genre generally dealing with themes of magic and the supernatural, imaginary worlds and creatures, etc.
To imagine; to conceive mentally.
To fantasize (about).
Something (especially a series of ideas, letters, words, etc.) used to help in remembering a thing; a memory aid.
The human-readable, textual form of an assembly language instruction, not including operands.
Of or relating to memory.
Especially of a series of ideas, letters, words, etc.: intended to help in remembering.
Of or relating to mnemonics (“the study of techniques for remembering anything more easily”).