Dimethicone, also known as polydimethylsiloxane, is a silicon-based polymer that is a man-made synthetic molecule made up of repeating units called monomers. Silicon is the second most abundant element in the Earth's crust after oxygen, and silicon dioxide is also known as sand, commonly found on beaches and shores.
In regards to a job, a refusal letter is written when a company offers a position to an individual who must refuse due to his or her circumstances, such as already having accepted another offer, or simply a lack of interest in this particular job.
Patient Refusal: What to do when medical treatment and transport are rejected. The rural N.Y. volunteer fire department I ride with was dispatched to a supermarket for a woman who had fainted. Another EMT-B and I arrived on scene to find a young woman sitting on a chair at the cash register, looking dazed but conscious.