Abbreviations that start with the letter: # (47,392 entries)

		!	Factorial	Academic & Science » Mathematics
		!	logical NOT, negation (programming)	Computing » Software
		!	logical NOT, negation (programming, IC design)	Computing » General
		!-(	Black eye	Internet » Emoticons
		!-)	Proud of black eye	Internet » Emoticons
		!@!	excitement,Laughing Out Loud	Internet » Emoticons
		!WXT	The FLOAT device-independent X coordinate of the right edge of the plot window	Computing » Assembly
		!WYB	FLOAT device-independent Y coordinate of the bottom of the plot window	Computing » Assembly
		!WZT	FLOAT device-independent Z coordinate of the top edge of the 3D plot window	Computing » Assembly
		#	Bone Fracture	Medical » Hospitals
		#	Number	Academic & Science » Mathematics
		#	pound sign, octothorp, special function key	Computing » Telecom
		#	under HTML, ID= is replaced by # for CSS	Internet
		###	DoubleSpace Compressed volume file	Computing » File Extensions
		###	QTIC Temp file	Computing » File Extensions
		#-)	Wiped out, partied all night	Internet » Emoticons
		#24	LocoScript Printer data file for 24 pin matrix printer	Computing » File Extensions
		#:-O	Shocked	Internet » Emoticons
		#GF	MetaFont Font file	Computing » File Extensions
		#IB	LocoScript Printer data file	Computing » File Extensions
		#SC	LocoScript Printer data file	Computing » File Extensions
		#ST	LocoScript Standard mode printer definition file	Computing » File Extensions
		#~?	puzzled smilie	Internet » Emoticons
		$#!*	We Have a Problem	Governmental » NASA
		$$P	OS/2 Notes file	Computing » File Extensions
BTW, Why won't you become an editor?