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.
Dictionary entry overview: What does omission mean? â¢ OMISSION (noun) The noun OMISSION has 4 senses: 1. a mistake resulting from neglect 2. something that has been omitted 3. any process whereby sounds are left out of spoken words or phrases 4. neglecting to do something; leaving out or passing over something Familiarity information: OMISSION used as a noun is uncommon.