Morse code is a communication method that uses dots and dashes to represent letters and numbers. There are various synonyms for the term "by Morse code" that can be used in different contexts. Some examples include "via Morse code," "using Morse code," "by means of Morse code," and "through the use of Morse code." These phrases can be used to indicate the means of communication being employed, and are often used in situations where Morse code is still being used for communication purposes, such as in amateur radio or maritime communication. Regardless of the synonym used, the meaning remains the same - that the communication is being transmitted through the use of Morse code.