Definitions containing the term back-number

What does back-number mean?

035	# ( Number sign) Internet » ASCII Character Codes
DMFT	(number of ) decayed, missing, filled teeth Medical » British Medicine
SS	(Number) Sea State (Number) Governmental » Military
4WG	4-pass Wet-back fire tube Boiler with Gun Burner Business » Products
FN	A Fibonacci Number Miscellaneous » Unclassified
NF	A Number Of Filled Miscellaneous » Unclassified
ADN	Abbreviated Dialing Number Computing » Telecom
ANA	Abbreviated New Animal drug number Governmental » FDA
AND	Abbreviated New Drug application number Governmental » FDA
ARFCN	Absolute Radio Frequency Channel Number Academic & Science » Amateur Radio
APN	Access Point Number Computing » Networking
CAN	Account Control Number Governmental » Military
AN	Account Number Business » Accounting
ARN	Account Reference Number Business » Accounting
ADSN	Accounting and disbursing station number Governmental » US Government
ACRN	Accounting Classification Reference Number Governmental » US Government
ASSN	Accounting station symbol number Governmental » US Government
ADN	ACE (Allied Command Europe) Desired ground zero Number Governmental » Military
AN	Acid Number Miscellaneous » Unclassified
ASN	Act Scene Number Community » Performing Arts
ABP	Active Back Panel Computing » Networking
ACPN	Adjusted Composite Pupil Number Community » Educational
AIN	Admission Index Number Academic & Science » Universities
AEN	All Element Number Academic & Science » Chemistry
ACodP-1	Allied Codification Publication number 1 Governmental » Military