rough order of magnitude (ROM) Definition. An estimate of costs and time provided in the early stages of a project when its scope and requirements has not been fully defined. An ROM is used to reduce the uncertainty of cost outcomes for both parties when project details have yet to be identified. Use this term in a sentence.
Prior To Fitting Your Wickes Water Softener. The water softener must be installed inside a plastic water tank, this tank should then be you may hear a hissing noise as the water rushes through the valve. Once the hissing noise has stopped, open the outlet valve and run some water.
Cats hiss as a form of communication. Cats hiss at people to communicate pain, fear, displeasure or aggression. Also known as mimicry, the hissing sound cats make imitates the sound of a snake preparing to strike and is meant to intimidate.A cat that is hissing at people is sending a message that there is a problem.ain. Pain caused by injury or medical conditions could trigger hissing behavior in cats. If your cat hisses at you when you pet or hold her, she may be trying to tell you that she is in pain. Have your cat examined by a veterinarian to determine if your cat is injured or ill.