sort by Rank | Alpha
| Possible Meanings | Rank |
| National Commission on Accrediting | **** |
| National Council on Alcoholism | **** |
| National Control Authorities | **** |
| Northern College of Acupuncture | **** |
| National Canine Association | **** |
| Newport Collaborative Architects | **** |
| Network Cache and Accelerator | **** |
| Nuclear Command Authority | **** |
| National Center on Accessibility | **** |
| North Central Accreditation | **** |
| Northside Christian Academy | **** |
| Northern Calcareous Alps | **** |
| National Commission on AIDS | **** |
| National Computerization Agency | **** |
| National Command Authority | **** |
| National Commission on Accreditation | **** |
| North Central Accredited | **** |
| National Crime Authority | **** |
| Norwegian Coastal Administration | **** |
| Norse Cutting Abandonment | **** |
| National Credentialing Agency | **** |
| National Committee for Adoption | **** |
| Non Conductive Adhesive | **** |
| Norwegian Council for Africa | **** |
| Newfoundland Club of America | *** |
| National Centre for Audiology | *** |
| North Country Alliance | *** |
| National Commission of Audit | *** |
| Non Crossing Approximation | *** |
| Nuevo Central Argentino | *** |
| Nonspecific Crossreacting Antigen | *** |
| National Childrens Alliance | *** |
| New Croton Aqueduct | *** |
| National Council on Archives | *** |
| Narmada Control Authority | *** |
| National Cheerleading Association | *** |
| Non Competitive Applications | *** |
| North Carolina Association | *** |
| National Cheer Association | *** |
| Nursing Care Administration | *** |
| Neutrophil Chemotactic Activity | *** |
| national construction alliance | *** |
| National Communications Authority | *** |
| Netherlands Centre Alternatives | *** |
| National Certification Agency | *** |
| National Competition Authorities | *** |
| Ngorongoro Conservation Area | *** |
| National Collegiate Athletic | *** |
| Novel Chemotherapy Agents | *** |
| National Cricket Academy | *** |
| North Carolina Agricultural | *** |
| Non City Agency | *** |
| Nosara Civic Association | *** |
| National Champions Along | *** |
| Netlords Coalition of Arms | *** |
| Non Call Associated | *** |
| North Central Associations | *** |
| Newtown Creek Alliance | *** |
| Notice of Contemplated Action | *** |
| National Class Association | *** |
| National Cultural Autonomies | *** |
| National Capital Authority | *** |
| National Caterers Association | *** |
| National Cultural Alliance | *** |
| National Coordination Agencies | *** |
| National Concierge Association | *** |
| Nanaimo Community Archives | *** |
| National Capital Astronomers | *** |
| National Council of Arab | *** |
| North Country Associates | *** |
| Nature Conservation Act | *** |
| Narcotics Control Agency | *** |
| National Coordinating Agencies | *** |
| National Chiropractic Association | *** |
| Nederlandse Chiropractoren Associatie | *** |
| Non Construction Alternatives | *** |
| National Center for Atmospheric | *** |
| Natick Center Associates | *** |
| National Cancer Alliance | *** |
| National Credit Association | *** |
| National Camping Association | *** |
| National Copyright Administration | *** |
| Normal Coronary Arteries | *** |
| NAIC Club Accounting | *** |
| Northside Catholic Academy | *** |
| National Counterpart Agencies | *** |
| Natural Computing and Applications | *** |
| Nevada Clergy Association | *** |
| nevada connections academy | *** |
| National Council on the Arts | *** |
| Numonohi Christian Academy | *** |
| National Conservation Areas | *** |
| neighborhood conservation areas | *** |
| Northern Con Agg | *** |
| National Campaign for the Arts | *** |
| Northeast Christian Academy | *** |
| National Communication Authority | *** |
| Nurse Competence in Aging | *** |
| Nevada Chiropractic Association | *** |
| North County Aquatics | *** |
| Non Compete Agreements | *** |
| Non Contract Activity | *** |
| Nebraska Corvette Association | *** |
| Northwest Community Alliance | *** |
| National Certifying Agency | *** |
| National Computerized Agencies | *** |
| National Cooperative Agreements | *** |
| Nassau Christian Academy | *** |
| New Classical Adventure | *** |
| Norwegian Coffee Association | *** |
| National Coursing Association | *** |
| Neighborhood Centers Association | *** |
| Network Computing Architects | *** |
| Nazi Conspiracy and Aggression | *** |
| National Constituent Assembly | *** |
| National College of Advocacy | *** |
| National Coverage Analysis | *** |
| National Committee Against | *** |
| National Certified Alarms | *** |
| Noise Control and Acoustics | *** |
| National Capitol Area | *** |
| National Conference of Artists | *** |
| National Change Agent | *** |
| National Competent Authority | *** |
| North Caicos Airport | *** |
| National Computer Association | *** |
| National Commission on Agriculture | *** |
| National Competent Authorities | *** |
| National Coverage Analyses | *** |
| Nigeria Cricket Association | *** |
| No Carrier Added | *** |
| National Candy Association | *** |
| National Competitiveness Act | *** |
| Nextgen Contentpreneur Awards | *** |
| Net Cultivable Area | *** |
| North Carolina at Asheville | *** |
| Northern Control Area | *** |
| National Committee for Astronomy | *** |
| NORTH CAROLINA ASHEVILLE | *** |
| National Childminding Association | *** |
| Negatively Charged Albumins | *** |
| North Central Academic | *** |
| National Catastrophe Adjusters | *** |
| Neighborhood Cluster Association | *** |
| National Communications Association | *** |
| Newsletter Capital Area | *** |
| Nautic Club Austria | *** |
| Nebraska Coaches Association | *** |
| Neighborhood Center of the Arts | *** |
| National Curriculum Assessment | *** |
| National Class Associations | *** |
| Network Capital Alliance | ** |
| National Courts in Applying | ** |
| Nautic Club Ammersee | ** |
| Nurse Continence Advisors | ** |
| 4-acetylamino-1,8-naphthalimido-N-caproic acid | ** |
| N-carboxy anhydride | ** |
| N-carboxy anhydrides | ** |
| N-carboxy-anhydride | ** |
| native coronary arteries | ** |
| native coronary artery | ** |
| negative colour aftereffect | ** |
| nervi corporis allati | ** |
| nervus corporis allati | ** |
| neutral caseinolytic activity | ** |
| neutrophil chemoattractant activity | ** |
| neutrophilic chemotactic activity | ** |
| Nevus cell aggregates | ** |
| non-cold-acclimated | ** |
| normal colon antigen | ** |
| normal coordinate analysis | ** |
| normal coronary anatomy | ** |
| normal coronary angiogram | ** |
| normal coronary angiograms | ** |
| normal coronary arteriograms | ** |
| normal coronary artery | ** |
| normal crossreacting antigen | ** |
| novobiocin-colistin agar | ** |
| nuclear Ca2+-ATPase | ** |
| nuclear crush artifact | ** |
| nursing care assistants | ** |
| National Convention Assembly | ** |
| National Conservation Authority | ** |
| Nested Cladistic Analysis | ** |
| Niagara Construction Association | ** |
| North Central Accrediting | ** |
| National Control Authority | ** |
| Non Coding Architects | ** |
| nested clade analysis | ** |
| National Consumer Alliance | ** |
| Nuclear Cooperation Agreements | ** |
| Narcotics Control Act | ** |
| national construction agreement | ** |
| Nobody Cares Anymore | ** |
| National Computer Associates | ** |
| Narrow Constrained Areas | ** |
| National Care Association | ** |
| Nevada Contractors Association | ** |
| National Community Association | ** |
| National Crime Agency | ** |
| Norrie Carr Agency | ** |
| antigens--nonspecific cross-reacting antigen | ** |
| Nepal Cycling Association | ** |
| non-specific crossreacting antigen | ** |
| non-specific crossreacting antigens | ** |
| nonspecific cross reacting antigen | ** |
| Nonspecific cross-reacting antigen | ** |
| nonspecific cross-reacting antigens | ** |
| nonspecific cross-reacting-antigen | ** |
| nonspecific cross-reactive antigen | ** |
| normal cross reacting antigen | ** |
| normal cross-reacting antigen | ** |
| normal cross-reacting antigens | ** |
| normal cross-reactive antigen | ** |
| normal glycoprotein antigen | ** |
| nucleo-cytoplasmic maturation asynchrony | ** |
| number of chromosome aberrations | ** |
| National Cycling Association | ** |
| Negotiated Channel Arrangements | ** |
| Naples Christian Academy | ** |
| National Cycling Academy | ** |
| Nancy Chaidez Agency | ** |
| Northern Central Association | ** |
| 1-methyl-3-naphthyl-1-nitrosocarbamate | ** |
| National Computerisation Agency | ** |
| New Central Aviation | ** |
| Nexus Computing Agent | ** |
| Nigerian Canadian Association | ** |
| Norwegian Canoe Association | ** |
| Net Consumers Association | ** |
| New Claims Activity | ** |
| Norbornene Carboxylic Acid | ** |
| North Coast Athletics | ** |
| Nature Conservation Agreement | ** |
| National Cricket Association | ** |
| North Central Asia | ** |
| Nottinghamshire Chess Association | ** |
| National Caster Alliance | ** |
| Northlake Community Alliance | ** |
| Nassau Counselors Association | ** |
| neutrophil chemotactic factor | ** |
| National Council for Administration | ** |
| Notional Credit Approval | ** |
| Nashville Composers Association | ** |
| Nautischer Club Aarburg | ** |
| North Coast Academy | ** |
| Network Control Annunciator | ** |
| Nature Conservation Agency | ** |
| Northern California Association | ** |
| National Council on Ageing | ** |