latch-on casing centralizer

latch Noun

— A latch is a metal lever for fastening a door — A latch is a kind of electronics circuit which holds signal shortly.

on Preposition

— positioned at the upper surface of, touching from above The apple is on the table. — at the date of Tim was born on the 4th of July. — along, forwards (continuing an action) drive on, rock on — about, dealing with the subject of I have a book on history. There was a World Summit on the Information Society a few weeks ago. — touching; hanging from I have no money on me at the moment. I would like to eat the fruit on the trees. — because of, due to He was arrested on suspicion of bribery. I contacted Joanne on a hunch that she would know about it. The stock price increased on news of a new product.

on Adjective

— If something is on, it is active, functioning or operating. The television is on. The lights are on, so it is very bright.

casing

— noun the outermost covering of a pneumatic tire — noun the enclosing frame around a door or window opening the casings had rotted away and had to be replaced — noun (= case) the housing or outer covering of something the clock has a walnut case

centralizer noun

— A device used to centralize a piece of equipment. — (mathematics) (of an element in a group) The set of elements of the same group which commute with the element. See also normalizer.