List of acronyms and initialisms

This list contains acronyms, initialisms, and pseudo-blends. For the purposes of this list:

• acronym = an abbreviation pronounced as a series of constituent letters, e.g., SARS = severe acute respiratory syndrome
• initialism = an abbreviation pronounced wholly or partly using the names of its constituent letters, e.g., CD = compact disc
• pseudo-blend = an abbreviation whose extra or omitted letters means that it cannot stand as a true acronym, initialism, or portmanteau (a word formed by combining two or more words).

(a) = acronym in the example: SARS - (a) Severe acute respiratory syndrome

(i) = initialism in the example: CD - (i) Compact disc

(p) = pseudo-blend in the example: UNIFEM - (p) United Nations Development Fund for Women

(s) = symbol (none of the above, representing and pronounced as something else; for example: MHz - Megahertz)

Add new entries here or in the sub-pages

Please add your own entries, in this page or in the appropriate sub-page. Use a quasi-dictionary order, with lowercase treated the same as uppercase and ignoring non-alphanumeric characters (hyphens and such). This means that only alphanumeric characters have any significance in determining order, and that lowercase letters occupy the same ordering position as uppercase (in tie-breaker cases, list lower case first). For example: Ka appears before KA. (This differs from a strict ASCII ordering) Because of the list's size, acronyms and initialisms beginning with certain characters appear in separate articles.

Contents
0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z See also  External links

0–9

• 1, = Onekama, Michigan
• 2D - (i) Two-dimensional
• 2.5D - (p) "Two-and-a-half-dee": two-dimensional computer graphics where some flat images lie in front of others
• 2G - (i) Second-generation mobile (cellular, wireless) telephone system
• 2.5G - (p) Second-and-a-half-generation mobile telephone system
• 3D - (i) Three-dimensional
• 3G - (i) Third-generation mobile telephone system
• 3i - (i) Investors In Industry (venture capitalists)
• 3M - (i) Minnesota Mining and Manufacturing Company
• 4D - (i) Four-dimensional (usually three spatial plus one temporal dimension, sometimes 4 spatial ones)
• 4G - (i) Fourth-generation mobile telephone system
• 4GL - (i) Fourth-generation programming language
• 4WD - (i) Four Wheel Drive (cf. AWD)

A

See List of acronyms and initialisms: A

B

See List of acronyms and initialisms: B

C

See List of acronyms and initialisms: C

D

See List of acronyms and initialisms: D

E

See List of acronyms and initialisms: E

F

See List of acronyms and initialisms: F

G

See List of acronyms and initialisms: G

H

See List of acronyms and initialisms: H

I

See List of acronyms and initialisms: I

J

See List of acronyms and initialisms: J

K

See List of acronyms and initialisms: K

L

See List of acronyms and initialisms: L

M

See List of acronyms and initialisms: M

N

See List of acronyms and initialisms: N

O

See List of acronyms and initialisms: O

P

See List of acronyms and initialisms: P

Q

See List of acronyms and initialisms: Q

R

See List of acronyms and initialisms: R

S

See List of acronyms and initialisms: S

T

See List of acronyms and initialisms: T

U

See List of acronyms and initialisms: U

V

See List of acronyms and initialisms: V

W

See List of acronyms and initialisms: W

X

See List of acronyms and initialisms: X

Y

See List of acronyms and initialisms: Y

Z

See List of acronyms and initialisms: Z

Contents
Top  0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

See also

• Terms for market segments
• List of Internet slang phrases
• Backronym
• List of AAR reporting marks
• List of portmanteaus
• List of government and military acronyms
• List of medical abbreviations
• List of U.S. Army acronyms and expressions

External links

• AbbreviationZ.com directory of acronyms and abbreviations (over 330,000 entries)
• Acronym Finder searchable database of acronyms and abbreviations (over 575,000 entries)
• Acronym Search searchable database of acronyms and abbreviations (over 50,000 entries)
• Acronyms List searchable database of acronyms and abbreviations (over 40,000 entries)
• Acronym Server searchable database of acronyms and abbreviations (over 20,000 entries)
• Apronyms & Acronyms
• Abbreviations used in Genealogy
• Australian Government abbreviations and acronyms
• Canadian Government abbreviations and acronyms
• IT Acronyms
• Logistics World - U.S. Government and Military Acronyms
• Need an apronym created?
• Special Dictionary Acronyms and abbreviation database with lookup function
• The Free Acronym Dictionary, by Farlex
• U.S. DoD Dictionary of Military and Associated Terms
• U.S. Government abbreviations and acronyms