Definitions containing the term f-number

What does f-number mean?

ERN	Environmental Regularity Number Governmental » Environmental
NF	Number of Farms Miscellaneous » Farming
CTNF	Computerized Telephone Number File Governmental » FBI Files
SSA	Selective Service Number Governmental » FBI Files
TRx	Total number of Prescriptions Governmental » FDA
NSN	National Stock Number Governmental » FDA
STN	Submission Tracking Number Governmental » FDA
UIN	unique identification number Governmental » FDA
ACC	RCHSA (Radiation Control for Health and Safety Act) ACCession number Governmental » FDA
AIN	food additive identification number (ORA AofC code) Governmental » FDA
ANA	Abbreviated New Animal drug number Governmental » FDA
BFL	Biologic establishment license number (ORA AofC code) Governmental » FDA
BPL	Biologic Product License Number Governmental » FDA
CIN	Color Index number (ORA AofC code) Governmental » FDA
COS	cosmetic registration number (ORA AofC code) Governmental » FDA
DEV	DEVice Registration Number Governmental » FDA
AND	Abbreviated New Drug application number Governmental » FDA
FAP	food additive petition approval number (ORA AofC code) Governmental » FDA
FCC	French Cheese facility Certification number Governmental » FDA
FCE	Food Canning Establishment number Governmental » FDA
IDE	Investigational Device Exemption number Governmental » FDA
INA	Investigational New Animal drug number Governmental » FDA
LST	LiSTing number of a device Governmental » FDA
MFA	Medicated Feed Application number Governmental » FDA
MDL	model number (ORA AofC code) Governmental » FDA

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