Radiotelegraphy, also known as wireless telegraphy, is the transmission of telegraphic signals over radio waves. Some synonyms for the word radiotelegraphic include radio transmission, wireless communication, and radio telegraphy. Other related terms might include Morse code, which is the system of dots and dashes used to represent letters in radiotelegraphy, as well as telecommunication and wireless telephony. Radiotelegraphy played a significant role in the development of global communication, allowing messages to be sent long distances without the need for physical wires or cables. Today, radiotelegraphy is still used in some specialized applications, such as maritime and aviation communication.