vox·el 
(vŏksəl)
(vŏksəl)n.
The basic unit of a three-dimensional digital representation of an image or object.
[VO(LUMETRIC) + (PI)XEL.]
- underpaid
- under pain of
- underpants
- underpart
- underpass
- underpay
- underpayment
- underperform
- underperformance
- underperformer
- underpin
- underpinning
- underplay
- underplot
- underpopulated
- underpopulation
- underprice
- underprivileged
- underproduce
- underproduction
- underproof
- underprop
- underran
- underrate
- underreact