Chemistry Acronyms

Alphabetical Listing of Chemistry Acronyms

• NWRI — National Water Research Institute (Burlington
• NWS — National Weather Service
• NWSIA — National Water Supply Improvement Association
• NWWA — National Water Well Association
• NWWA — Northwest Water Authority (UK)
• NYSAS — New York Summer Aerosol Study
• NYSDEC — New York State Department of Environmental Conservation
• NYSERDA — New York State Energy Research And Development Authority
• NZRPA — Normalized Zero-range Potential Approxn.
• O/E — Observed Number/expected Number Ratio = Relative Risk
• OA — Office of The Administrator
• OAM — Optical Absorption Microscope
• OAO — Orthogonalized Atomic Orbital
• OAP — Optical Atom Probe
• OAPP — Oxidized Atactic Polypropylene
• OAQPS — Office of Air Quality Planning And Standards
• OAQPSTTN — Office of Air Quality Planning And Standards Technology Transfer Network
• OAR — Office of Air And Radiation (USEPA)
• OARM — Office of Administration And Resources Management (USEPA)
• OASCR — Office of Advanced Scientific Computing Research
• OASIS — Ocean And Atmospheric Sounding Interferometer System
• OASLM — Optically Addressed Spatial Light Modulator
• OAW — Oxyacetylene Welding
• OB/OD — Open Burn/open Detonation
• OBD — Optical Beam Deflection
• OBD — On-board Diagnosis
• OBDD — Ordered Bicontinuous Double-diamond
• OBE — Optical Bloch Equation
• OBIC — Optical Beam Induced Current
• OBK — Oppenheimer-Brinkman-Kramers (approxn. In Atom-ion Electron-exchange Calcns.)
• OBK2 — Second-order Oppenheimer-Brinkman-Kramers
• OBK3 — Third-order Oppenheimer-Brinkman-Kramers
• OBS-MCSC — Optimized Basis Set-multiconfiguration Spin Coupled
• OC — Office of The Comptroller
• OC — Oxygen Consumed
• OCAMS — Orbital Correspondence Analysis In Maximum Symmetry
• OCAP — Open-channel Air Preheater
• OCBSE — Orthogonality Constrained Basis Set Expansion Prodedure
• OCC — Organochlorinated Compound
• OCCSD — Open-shell Coupled-cluster (with) Single (and) Double (excitations)
• OCD — Offshore And Coastal Dispersion (modeling of Air Quality)
• OCD — Overlapping Charge Density (model In Electronic Structure)
• OCE — One-center Expansion (SCF MO Method)
• OCE — Overall Control Efficiency
• OCE-DF — One-center Expansion Dirac-Fock
• OCEC — Open-channel Electrochromatography
• OCEE — Overlap Corrected Electronegativity Equalization
• OCEFT — Office of Criminal Enforcement
• OCEPA — Office of Communications
• OCH — Ochkur (approxn. In Electron-atom Scattering Calcns.)
• OCIS — OSHA Computerized Information System
• OCIS — Optics Classification And Indexing Scheme
• OCLC — Online Computer Library Center
• OCOS — Orbital Charge-ordering State
• OCP — Organochlorine Pesticide
• OCPSF — Organic Chemical, Plastics, And Synthetic Fiber Industry
• OCR — Optical Character Recognition
• OCRWM — Office of Civilian Radioactive Waste Management
• OCS — Outer Continental Shelf
• OCSC — Orbital-charge-self-consistent (in Electronic State Calcn.)
• OCT — Optical Coherence Tomography
• OCT — Optical Current Transducer
• OCT — Optimized Cluster Theory
• OCTA — Oxidizing Capacity of The Tropospheric Atmosphere
• OCTG — Oil Country Tubular Goods
• OCTS — Ocean Color And Temperature Sensor
• OD — Order-Disorder (in Mineral Structure)
• OD — Optical Density
• ODAS — Ocean Data Acquisition System
• ODC — Optimized Double Configuration
• ODC — Orientation Distribution Coeffs.
• ODC — Ozone Depleting Chemical
• ODCPA — Off-diagonal (disorder) Coherent-potential Approxn.
• ODES — Ocean Data Evaluation System
• ODEX — Optical Dynamics Experiments
• ODF — Orientation Distribution Function
• ODFS — Optimized Dirac-Fock-Slater
• ODLRO — Off-diagonal Long-range Order
• ODLTS — Optical Deep Level Transient Spectroscopy
• ODMR — Optically Detected Magnetic Resonance
• ODP — Ocean Drilling Program
• ODP — Optical Deformation Potential
• ODP — Ozone Depletion Potential
• ODPA — 4,4′-oxydiphthalic Anhydride
• ODPAS — Optically Detected Photoacoustic Spectroscopy
• ODR — Optical Double Resonance
• ODS — Oxide Dispersion-strengthened
• ODS — Ozone Depleting Substances
• ODSC — Oscillating Differential Scanning Calorimetry
• ODT — Order-disorder Transition
• ODU — Optical Density Units
• ODUS — Ozone Dynamics UV Spectrometer
• OE — Office of Enforcement
• OEA — Occupational Exposure Assessment
• OEAO — Overlap Enhanced Atomic Orbital
• OEBR — Optical Edge Bead Removal
• OECA — Office of Enforcement And Compliance Assurance
• OECD — Organization For Economic Cooperation And Development
• OECD/SIDS — Organisation For Economic Co-operation And Developments Screening Information Data Sets
• OEH — One-electron Hamiltonian (quantum Method)