Types of Pipes. Pipes come in several types and sizes. They can be divided into three main categories: metallic pipes, cement pipes and plastic pipes. Metallic pipes include steel pipes, galvanised iron pipes and cast iron pipes. Cement pipes include concrete cement pipes and asbestos cement pipes.
error of omissionnoun [ C ] uk â us â. âº a mistake that consists of not doing something you should have done, or not including something such as an amount or fact that should be included: Errors of omission are likely to be more common than errors of commission.
play \i-Ëlip-ËsÄz, e-\. 1  1a : the omission of one or more words that are obviously understood but that must be supplied to make a construction grammatically completeb : a sudden leap from one topic to another. 2  2 : marks or a mark (such as â¦ ) indicating an omission (as of words) or a pause.