fourth dimension
Noun: - A theoretical dimension beyond the three spatial dimensions (length, width, height): The "fourth dimension" is a concept in physics and geometry, often identified with time in the context of spacetime, that is required alongside the three spatial dimensions to fully describe the location and state of an event in the universe.
- Noun:
- In Einstein's theory of relativity, time is treated as the fourth dimension.
- The science fiction novel explores travel through the fourth dimension.
- Visualizing the fourth dimension is a challenge for the human mind, which is accustomed to perceiving only three spatial dimensions.
"The fourth dimension" in theoretical physics: Specifically refers to the temporal dimension in the four-dimensional continuum of spacetime.
- The equations unify space and time by combining three dimensions of space with one dimension of time as a fourth dimension.
"The fourth dimension" in abstract or metaphorical contexts: Can be used to describe an abstract quality or aspect that is fundamental yet not directly perceivable.
- For the artist, color represented the fourth dimension of the sculpture, adding emotional depth to its form.
Spacetime (n): The four-dimensional continuum in which all physical events occur, combining three dimensions of space and one of time.
- Gravity is understood as a curvature in spacetime.
Hyperspace (n): A theoretical space with more than three dimensions, often used in science fiction.
- The spaceship entered hyperspace, traveling through dimensions beyond the third.
- Time (in the context of physics): When specifically equated with the fourth dimension in spacetime.
- Temporal dimension: A more formal term for the dimension of time.
Four-dimensional (4D): An adjective describing something that exists in or pertains to four dimensions.
- The model attempts to show a four-dimensional object.
Fourth-dimensional space: A phrase emphasizing the spatial, rather than temporal, interpretation of a fourth dimension in geometry.
- Mathematicians study the properties of fourth-dimensional space.
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the fourth coordinate that is required (along with three spatial dimensions) to specify a physical event
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