the.com/thickness
The space a thing claims between you and getting to the other side.
means The measurement of how deep or wide something is through its smallest dimension, or the quality of being dense rather than thin.
from From Old English thicce, meaning dense or close-packed; the -ness simply turns the trait into a measurable thing you can quote in millimeters.
Cooking truthSteak thickness matters more than weight for doneness.
Slang detourNow also praises a curvy, full-figured silhouette.
Physics quirkGold leaf gets beaten to atoms-thin thickness.