Definition: Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.
Input: Question: In technical literature as well as aircraft user interfaces where there is not enough space to write the whole word, the prefix "trans" is shortened to "x". Transmit -> Xmit Transfer -> Xfer I am interested to know what is the origin of this. I am curious because "Ex" and "Trans" do not have a similar sound. 
Answer: X is commonly used to refer to cross because of its shape of two lines crossing. Trans- means cross/across. Trans- and cross- are interchangeable in many cases. From Wikipedia (emphasis mine): In abbreviations, it can represent trans- (e.g. XMIT for 'transmit', XFER for 'transfer'), cross- (e.g. X-ing for 'crossing', XREF for 'cross-reference'), Christ- as shorthand for the labarum (e.g. Xmas for 'Christmas', Xian for 'Christian'), the crys- in 'crystal' (XTAL), or various words starting with ex- (e.g. XL for 'extra large', XOR for 'exclusive-or'). Example: a transatlantic flight is one that crosses the Atlantic, and something that is transdermal crosses through the skin. The trans- in transmit and transfer is analogous to transatlantic. Crossing a mit or a fer makes perfect sense. -Mit is from the Latin mittere which means to send. -Fer is from the Latin ferre which means to bear or carry. 'Transmit' often means to send across something or over a specific medium and 'transfer' can be to carry across from one to another. Therefore trans- is often replaced with X- in certain words.

yes