What does IF stand for?

Frame Identification (SAUS)

Ice Fog

Ictal Fear - Medicine (MELL)

Ideational Fluency - Research test

Identification Field (SAUS)

Identified Fed

Identifier Field (SAUS)

Idiopathic Fibroplasia - Medicine (DMAA)

Idiopathic Flushing - Medicine (DMAA)

Idirect Fluorescence - Medicine (DMAA)

Ifosfamid (SAUS)

Image Frequency (IAA)

Immersion Fixation - Microbiology

Immersion Foot - Medicine (DMAA)

Immunofixation - Medicine (MELL)

Immunofluorescence - Immunochemistry

Immunofluorescent (SAUS)

Impact Form (SAUS)

Imperial Father - of the Chapel - Unions - British (DGA)

Imperial Forces (SAUO)

Implant Failure - Medicine (MELL)

Implementers Forum (MWOL)

Importance Factor - Statistics

Imprest Fund (MCD)

Incentive Fee (ACAE)

Incompressible Flow (SAUS)

Independent Force - British military (DMA)

Independent Foundation

Indexed File (VLIE)

Indexing Feature (SAUS)

Indian Financial Questions - British

Indirect Fire (SAUS)

Indirect Fluorescent

Indonesia Fund - NYSE symbol (SPSG)

Industrial Appointment Full Time - Chiropody - British

Industrial Fund (AFM)

Industrial Furnace (SAUS)

Inertial Fusion (SAUS)

Inferior Facet - Medicine (MELL)

Infertility (SAUS)

Infield - Baseball term (NDBD)

Infielder - Position in baseball

Infield Fly - Baseball term (NDBD)

In-Flight (AAG)

Information Collector (SAA)

Information Feedback

Information Flow (SAUS)

Information Format (SAUS)

Information Function (SAUS)

Infrapatellar Fat - Medicine (MELL)

Infrared (MCD)

Infrared Filter

In Full

Inhibiting Factor

Inhibitory Factor (SAUS)

Iniriation Factor (SAUS)

Initiation Factor - Protein biosynthesis

Inner Flame (SAUS)

Inner Forme - Imposition (DGA)

Inside Face (DAC)

Inside Frosted

Installation Fixtures (MCD)

Instantaneous Flow - Medicine (DMAA)

Institute for the Future (SAUO)

Institute of Fuel - British

Instructional Television, Fixed - FCC (NTCM)

Instruction Field

Instruction Folder (MSA)

Instruction Format (SAUS)

Instrument Flight (IAA)

Instrument Flying - Aviation

Insufficient Funds

Insular Force

Integration Facility (MCD)

Intellectual Framework

Intellectual Freedom

Intelligence Fusion - Army

Intensification Factor (SAUS)

Intensity Factor

Intensive Flying (SAUS)

Interference Filter

Interferon - Also, IFN - Biochemistry

Interferon Foundation - Defunct (EA)

Interflug - ICAO designator (AD)

Interfuture (EA)

Interior Facet - Medicine (DMAA)

Intermediate Facility (ARMP)

Intermediate Factor (SAUS)

Intermediate Filament - Anatomy

Intermediate Fix - FAA (TAG)

Intermediate Forward - Army

Intermediate Frequency - Electronics

Intermittent Frequency (ACAE)

Internal Fixation - Orthopedics (DAVI)

Internal Focusing (SAUS)

Internal Friction (SAUS)

Internal Function - Electronics (ECII)

Internally Flawless - Diamond clarity grade

International Federation of American Homing Pigeon Fanciers (EA)

International Fellowship (SAUO)

International Forestry (ALAC)

International Forum (EA)

International Foundation (EAIO)

International Foundation fo Employee Benefit Plans (NTPA)

Interrupt Flag - Computer science

Interstitial Fluid - Physiology

Interstitial-Free - Metallurgical engineering

Interventional Fluoroscopy - Medicine (DMAA)

Intrinsic Factor - Biochemistry

Intruders Foundation - Research center (RCD)

Inventory File (SAUS)

Inventrepreneurs' Forum (EA)

Inverted File (NITA)

Inviscid Flow (SAUS)

Involved Field - Medicine

Ion Focusing (SAUS)

Ionization Front (SAUS)

Ipse Fecit - He Did It Himself - Latin

Ipso Facto - By the Fact Itself - Latin

Ireland Fund (EA)

Irish Fusiliers - British military (DMA)

Ironforge

Irregular Force - Military (CINC)

Isofrigid - Soil biology - Soil temperature regime (QSUL)

Isothermal Flow (SAUS)

Isotta-Fraschini - Italian luxury auto maker

Royal Inniskilling Fusiliers (SAUO)

Intermediate Frequency (ABAC)

International Federation for Hydrocephalus and Spina Bifida (SAUO)