What does Df stand for?

Deficiency (QSUL)

Drittfach (SAUS)

deflect (SAUS)

Deflection (SAUS)

Degrees of Freedom

derrick floor (SAUS)

Direction Finding (IDOE)

dummy fuse (SAUS)

dunnage free (SAUS)

Air Nebraska - ICAO designator (AD)

Associate Directorate for Facilities and Systems Management - Kennedy Space Center - NASA (NASA)

Daae-Finsen - Disease - Medicine (DB)

Daedalian Foundation (EA)

Dairy Farmer - A publication (SAUS)

Damage Free - Business term

Damping Factor

Danish People's Party - Political party (PSAP)

Danmarks (SAUS)

Danny Foundation (EA)

Darkfield (AAEL)

Data Fetch (SAUS)

Data Field - Computer science

Data Flag (VLIE)

Data Folder

Date Filed - IRS

Day Fighter (SAUS)

Day Frequency (IAA)

Daylight Factor (DAC)

Dead Freight - Shipping

Dean Foods - NYSE symbol

Dean Foods Co. - NYSE symbol (SPSG)

Dean of the Faculty

Dear Friend - An opening clause (TONE)

Debre-Fibiger - Syndrome - Medicine (DB)

Decal Film

Decapacitation Factor - with reference to sperm - Medicine

Decayed and Filled - Dentistry (DAVI)

Decimal Factor (MCD)

Decimal Fraction (MDG)

Decision Feature (SAUS)

Decision Feedback (SAUS)

Decision Function (SAUS)

Decontamination Facility

Decontamination Factor

Deep Freezing (SAUS)

Deere Funk - Automotive industry supplier

Default - Automotive emissions

Defence Fellowship - British

Defender of the Faith (WDAA)

Defensive Fire

Defensor Fidei - Defender of the Faith - Latin

Deferoxamine - Also, Desferrioxamine - Chelating agent

Deficiency Factor (MAE)

Defined Flora Animal - Medicine (DMAA)

Definition

Deflection Factor (IEEE)

Defluorination (SAUS)

Defogging (AAG)

Degrees Fahrenheit (KSC)

Degrees of Freedom - of movement

Deionization-Filtration

Delay Fuse

Delta Flyer - Starship - Star Trek (STREK)

Demagnetization Factor (SAUS)

Democracy Fund - Defunct (EA)

Dengue Fever - Medicine (MELL)

Dense Film (SAUS)

Dense Flint (AAG)

Department of Forestry (SAUS)

Deposition Form - Army (ADDR)

Depot Fixed (AAG)

Depreciation Factor (IAA)

Depressed Fracture - Medicine (MELL)

Depth of Field - or Focus - Photography

Derating Factor

Derivation of Frequency with Respect to Time (IAA)

Dermatofibroma - Medicine (MELL)

Dermatology Foundation (EA)

Describing Function

Desferrioxamine - Deferoxamine - Pharmacology (DAVI)

Design Formula

Destination Field

Destroyer Flotilla - Navy

Detailed Forecast (MCD)

Deterioration Factor - Automotive engineering

Deutereium Fluoride (IEEE)

Development Fixture (MCD)

Development Flight (NASA)

Development-Forward (MCD)

Development Fund

Device Flag - Computer science

Device Function - Computer science (IAA)

Diabetic Father - Medicine

Diagnostic Flag (SAUS)

Dialogue Foundation (EA)

Dialysis Fluid - Physiology

Dialyzable Fraction

Diamond Flap - Envelopes

Diastolic Filling - Medicine (EDAA)

Dicke-Fix - Electronics

Dickens Fellowship (SAUO)

Die Forming (SAUS)

Dierk's Forest - Federal Railroad Administration identification code

Diesel Fuel - or Fueled (CINC)

Dietary Fiber - Nutrition

Differ - Telegraphy (PCTE)

Difference Frequency (SAUS)

Differential Flotation (SAUS)

Differential Frequency (IAA)

Differentiation Factor - Biochemistry

Digital Filter (SAUS)

Digital Fluoroscopy (SAUS)

Dilution Factor - Also, Fd - Nuclear energy (NRCH)

Dimensional Flowcharting - Computer science

Dirac-Fock Theory - Electrodynamics

Direct File (SAUS)

Direct Flight (MCD)

Direct Flow

Direct Fluorescence

Direct Frequency (ACAE)

Direction Finder - or Finding - Radio aid to navigation

Direction-Finding (PIAV)

Direction Flag - Computer science (VERA)

Disaccommodation Factor

Disappearing Filament (SAUS)

Disassembly Facility - NASA (NASA)

disc file (SAUS)

Discharge Flow - Chemical kinetics

Discriminant Function - Physiology

Discrimination Factor (SAUS)

Discrimination Filter (AAG)

Discripteur de Fichier (SAUS)

Disk File - Computer science (BUR)

Disk Free - Computer science (VERA)

Dislocated Farmer - Job Training and Partnership Act (OICC)

Dispersion Factor - Environmental science (COE)

display format facility (SAUS)

Disposition Form - Army

Disseminated Foci - Medicine

Dissipation Factor

distorrion factor (SAUS)

Distortion Factor - Telecommunications (IAA)

Distributing Frame (SAUS)

Distribution Factor

Distribution Feeder - Telecommunications (OA)

Distribution Frame (KSC)

Distribution From (CCCA)

Distribution Function - Statistics

Distrito Federal - NCIC Mexican state code (NCIC)

Ditchley Foundation (EA)

Diva Foundation (EA)

Diversity Factor

Diverted Force (CINC)

Divorced Female - Classified advertising

Doctor of Forestry

Document Feeding (SAUS)

Dodge Foundation (SAUO)

Dog Fight (ACAE)

domestic or foreign recipient. (SAUS)

Dominance Factor (VLIE)

Dong Feng - East Wind - Chinese missile

Don't Fragment - Telecommunications jargon

Don't Fragment flag

Door in Flat - Theater

Dorsal Fold

Dorsiflexion - Medicine

Dose Factor - Radioactivity calculations

Double Feeder - Line - Technical drawings

Double Flag (SAUS)

Double Focusing (SAUS)

Double Foolscap - Paper (ADA)

Double Frequency

Double Fronted (SAUS)

Douglas Fir (MSA)

downflow (SAUS)

Draft (ADA)

Draft Printer (SAUS)

Drag Factor (VLIE)

Drag Friction

Drainage Free (MIST)

Dream Factory (EA)

Drift Flux (SAUS)

Drinking Fountain (AAG)

Drive Fit - Technical drawings

Drop Forge (KSC)

Drop Forging (SAUS)

Drug Free (MELL)

Drum File (SAUS)

Dual Facility

Dual filter (SAUS)

Dualfuel (NREL)

Duodenal Flexure - Medicine (MELL)

Duplex filter (SAUS)

Duty Factor - Military (CAAL)

Duty Free - Customs

Dye-Free - Pharmacy

Dynamic Fermenter - Microbiology

Dysautonomia Foundation (EA)

Dysgonic Fermenter (DB)

Fallout Forecast Data - Civil Defense

Methylphosphonic Difluoride (SAUS)

Project Management (SAUS)