the dimension through an object as opposed to its length or width

The quality or state of being thick ( in any of the senses of the adjective).

The state of being thick, or concrete, or close, or crowded, or dull.

resistance to flow

Closeness or denseness; depth from side to side, or from sufrace to sufrace; quantity laid on quantity to some depth; consistence; want of quickness of perception.

The upper cylinder may be raised or lowered to suit the thickness of the work. – Modern Machine-Shop Practice, Volumes I and II by Joshua Rose

Turn the gravy back into the pan, stir it till of a fine thickness without boiling, and garnish with lemon. – The Cook and Housekeeper's Complete and Universal Dictionary; Including a System of Modern Cookery, in all Its Various Branches, by Mary Eaton

There was a stair in the thickness of the wall, going down steep and straight. – Donal Grant by George MacDonald

These soles and also the less heavy inner soles go through machines that make all parts of them of a uniform thickness. – Makers of Many Things by Eva March Tappan

2358; smaller at A than at B, and also at C than at D, while the thickness from A to B is greater than that from C to D, while the widths C D are less than the corresponding width of the rod. – Modern Machine-Shop Practice, Volumes I and II by Joshua Rose

Choosing trees with trunks of a middling thickness, we soon had a great quantity cut down and made of the length that was needed. – Marjorie by Justin Huntly McCarthy

He was standing at the foot of a narrow flight of stone steps which ran upwards and was soon lost to sight in the thickness of the wall. – Jack Haydon's Quest by John Finnemore

But the sound was dulled by the thickness of the walls and the care with which the chinks of the door had been " made up." – The Dew of Their Youth by S. R. Crockett

Again I was struck by the thickness and beauty of the panther's skin, and wished to have it for my mother's chair. – Donald McElroy, Scotch Irishman by Willie Walker Caldwell

The time of cooking may vary slightly according to the thickness of the meat. – Better Meals for Less Money by Mary Green

20 It was defended by a single wall of great thickness, and twelve hundred feet long on the side facing the city, where the precipitous character of the ground was of itself almost sufficient for its defence. – History-of-the-Conquest-of-Peru by Prescott, William Hickling

For a moment, the thickness seemed to relax, and Hanson choked a few words out through it. – The Sky Is Falling by Lester del Rey

This is but a small fraction of the thickness to which snow would be piled on the Alps were it not constantly being drained away. – The Elements of Geology by William Harmon Norton

The church chest is often an ancient and interesting object: sometimes we find it rudely formed, or hollowed out of the solid trunk of a tree, with a plain or barrel- shaped lid of considerable thickness. – The Principles of Gothic Ecclesiastical Architecture, Elucidated by Question and Answer, 4th ed. by Matthew Holbeche Bloxam

It is light brown and varies from the center to the edge by two inches to one inch in thickness. – Sumerian Liturgies and Psalms by Stephen Langdon

Set it on a slow fire, stir it well, and take it up as soon as it has boiled to a proper thickness. – The Cook and Housekeeper's Complete and Universal Dictionary; Including a System of Modern Cookery, in all Its Various Branches, by Mary Eaton

You must consider the thickness, not the weight. – A Poetical Cook-Book by Maria J. Moss

It was only due to their extreme thickness that we were saved, and also to the fact that we were under the protection of the wall. – Fanny Goes to War by Pat Beauchamp