plural dimensions
1
: the length, width, height, or depth of something : a measurement in one direction (such as the distance from the ceiling to the floor in a room)
She carefully measured each dimension of the room.
The room's dimensions [=its length, width, and height] were surprisingly small.
2
: the amount or number of things that something affects or influences
—usually plural
We underestimated the dimensions [=extent, range] of this problem.
the vast dimensions [=magnitude, scope] of the disaster
3
: a part of something
There are many dimensions [=aspects] to the problem.
The social/political/religious dimensions of the problem must also be taken into account.
The more powerful engine gives this car a (whole) new dimension. [=makes the car very different]
Cite this Entry
“Dimension.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/dimension. Accessed 16 Apr. 2026.
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