This is actually a text based dictionary in pdf format which can be useful for knowing many electrical terms in minimum time. Since, it is in pdf-format, you can find your query by using the ‘find’ option (CTRL+F) of the pdf reader.
It consists of three files having a range of English alphabets each.
DOWNLOAD (Split into 3 pdf files)
Update: You can also download this single file (combination of the of above mentioned 3 files)
DOWNLOAD (1 pdf) (Thanks to Goldig)