i Register
In some senses, thickness is marked as informal. Watch for register when choosing this word.
ADJ.
internal, novel, same
The walls had the same thickness throughout the old Victorian house.
VERB + THICKNESS
achieve, check, desired, line, measure, measuring, surface
We need to measure the thickness of the wood before cutting it to size.
THICKNESS + NOUN
atoms, duration, earth's, inches, nil, piece, saturn's, walls
The steel plate measured several inches thickness and could withstand tremendous pressure.