Definitions containing the term f-number

What does f-number mean?

BPL	Biologic Product License Number Governmental » FDA
BN	Bit Number Miscellaneous » Unclassified
BSN	Block Sequential Number Computing » Networking
BN	Board Number Miscellaneous » Unclassified
BNC	Boardman Number Custodian Business » Positions
B#	Bolender Number Miscellaneous » Coins
BB#	Bowers and Borckardt Number Miscellaneous » Coins
BG#	Breen and Gillio Number Miscellaneous » Coins
BHN	Brinell Hardness Number Academic & Science » Chemistry
BHN	Brinell Hardness Number Academic & Science » Physics
BHN	Brinell Hardness Number Business » Products
BHN	Brinell Hardness Number Governmental » NASA
B#	Browning Number Miscellaneous » Coins
BLIN	Budget Line Item Number Governmental » Military
BCIN	Building Code Identification Number Academic & Science » Architecture
BIN	Building Identification Number Business » General
BRN	Bulk Richardson Number Medical » British Medicine
BG-1	Burinng Ground number 1 Governmental » Military
BG-2	Burning Ground number 2 Governmental » Military
BN	Burst Number Miscellaneous » Unclassified
BIN	Business Identification Number Business » International Business
BN	Business Number Business » General
CNA	Called Number Authority Computing » Telecom
CN	Calling Number Computing » Telecom
CND	Calling Number Display Computing » Telecom

f-number(n.): a number corresponding to the ratio of the focal length to the diameter of a lens system, esp. a camera lens.