en تخصصي Special سرمقاله Editorial <div style="text-align: justify;"><span style="font-size:14px;"><span style="font-family:Tahoma;"><span style="line-height:2;"><span style="unicode-bidi:embed">New computer science technologies have sought to bring the virtual world and the real world closer and increase human interactions. Formerly, from the viewpoint of end users, personal computers, the Internet, and mobile devices were the three main waves of technology innovation, and the three-dimensional, immersive technologies, such as virtual reality (VR) and augmented reality (AR) are the fourth wave of this movement. Metaverse is a new paradigm that is expected to revolutionize and change dramatically in various areas, such as business, telecommuting, entertainment, and especially education. Metaverse consists of two-compound hybrid words, including meta which is a Greek prefix, meaning post (after or beyond) and universe. Metaverse is a multiuser, eternal, post-reality environment that combines digital virtuality and physical reality. Its foundation is the confluence of technologies, like VR and AR, which allow for multimodal interactions with digital objects, people, and virtual surroundings. As a result, the metaverse can be defined as a persistent multiuser platform that is connected to other networks of socially engaging settings.</span></span></span></span></div> Metaverse, Augmented reality, Virtual reality, Disaster training ​​​​​​​ 247 248 http://hdq.uswr.ac.ir/browse.php?a_code=A-10-151-4&slc_lang=en&sid=1 Mehdi Beyrami Jam m_beyramijam@yahoo.com 0000-0002-1373-7808 No Department of Pre-Hospital Medical Emergencies, School of Paramedical, Qazvin University of Medical Sciences, Qazvin, Iran. Yousof Akbari-Shahrestanaki y.akbari55@gmail.com No Department of Pre-Hospital Medical Emergencies, School of Paramedical, Qazvin University of Medical Sciences, Qazvin, Iran. Armin Salavatian Arminsalavatian@gmail.com No Department of Surgical Technology, School of Paramedical, Qazvin University of Medical Sciences, Qazvin, Iran. Alireza Shafiei a_r_shafiee@yahoo.com 0000-0002-3925-7204/ Yes Department of Surgical Technology, School of Paramedical, Qazvin University of Medical Sciences, Qazvin, Iran.