Reply To: abbreviation and hyphen Home › Forums › Nemeth Code for Math and Science › abbreviation and hyphen › Reply To: abbreviation and hyphen January 17, 2012 at 4:52 pm #21240 Lindy WaltonModerator Hello. I don't like the looks of this! If it is a worksheet, I might consider ignoring the hyphens. Otherwise, yes, you are correct that you should space after the first m and before the hyphen.