›HR, WORKPLACEto remove someone from their job, especially because they have done something wrong: dismiss sb for sthSalespeople may be dismissed for many reasons, the most common of which is poor performance.dismiss sb from sthHe was dismissed from his job for 'serious misconduct'. → See Noteresign
›LAWto formally stop a trial in a court of law, often because there is not enough proof that someone is guilty: dismiss charges/a case/a lawsuitThe company has asked the judge to dismiss the case saying that the claim it stole trade secrets is not legally well-founded.
›to decide that something or someone is not important and not worth considering: dismiss claims/complaints/concernsHe dismissed claims by members of the union that the layoffs are motivated by budgetary concerns.dismiss reports/speculation/talk The chairman dismissed talk of a merger with the rival company.