pdl
9.9
A measure of force in the foot-pound-second system that makes a one-pound object speed up by one foot each second
- noun
- Specialized
:
pdl
- A force of 2 pdl is required to achieve the desired movement of the molar during treatment.
Examples
-
The dentist explained that the force applied to the tooth is measured in pdl, which reflects how much pressure is needed.
-
As the braces pull on the tooth, the PDL is squeezed in One Direction and stretched in the other, kind of like a rubber band.
-
When the orthodontist adjusts the braces, the pressure in the pdl helps the teeth move into the correct position.
Synonyms
9.9
A unit of force that makes a one-pound object gain one foot per second of speed each second
has the same value but is expressed as a short abbreviation
Surface Forms
Etymology
Pdl is short for poundal, a name formed from pound with a little ending to mean a 'force'. A poundal is the 'force' that makes a one-pound mass speed up by 'one foot per second squared', so pdl is the small unit of force used in the old feet-pounds-seconds system.
