* Tesseract: This is a five-dimensional object that allows for non-linear travel through space and time. It's described as a wrinkle in time, allowing characters to move beyond the limitations of traditional travel.
* Wrinkle: The word "wrinkle" evokes the idea of bending, folding, and distorting, which aligns with the concept of the tesseract. It signifies that the journey the characters take isn't through a straight line but through a "wrinkled" or curved path.
* Time: The book is heavily focused on the theme of time, with the characters fighting against the forces of darkness that have distorted time and space. The title emphasizes the significance of time as a crucial element in their adventure.
Therefore, "A Wrinkle in Time" encapsulates the central concept of the story, the idea of non-linear travel through a warped space-time continuum. The title is both descriptive and symbolic, hinting at the adventure and the challenges the characters will face.