45 minutes ago, Aditus said:

Fear not, I won't translate it even though the word has an umlaut too.

Now I'm curious!

45 minutes ago, drpaladin said:

And we know how much you love umlauts.

The word "mnemonic" originates from the Ancient Greek word μνημονικός (mnēmonikos) (adjective), meaning "of or relating to memory". This, in turn, is derived from μνήμη (mnēmē), meaning "remembrance" or "memory". The Greek word is also connected to Mnemosyne, the goddess of memory in Greek mythology. The core of the word traces back to the Proto-Indo-European root *men-, meaning "to think".  Also from modern Latin from modern Latin mnemonica (in the same sense), Latin mneimonicum ''mnemonic device’.

The first known use of the word "mnemonic" in English, as an adjective, dates back to 1661, in a letter by Samuel Hartlib, according to the Oxford English Dictionary.  The noun form, referring to a mnemonic device, appeared later, in 1842. 

Examples of "mnemonic" in a sentence:  
"As the CORE mnemonic device shows, it's all up to you." 
"S.T.O.P. refers to the survival mnemonic for Stop, Think, Observe and Plan." 
"The DREAMS mnemonic can help make the diagnosis when it is being considered." 
"In fact, we can improve memory with mnemonic devices." 
"My Very Educated Mother Just Served Us Nachos is a mnemonic used to remember the order of the planets."  
"Roy G. Biv is a mnemonic used to remember the colors of the visible light spectrum (in order of increasing frequency): Red, Orange, Yellow, Green, Blue, Indigo, Violet.