Abbreviations are shortened forms of a written word, phrase or name used in place of the whole, for example:  ‘Dr.’ for Doctor, ‘Mr.’ for Mister, ‘gym’ for gymnastics, ‘Tim’ for Timothy, p.s. for post script. Abbreviations are found in almost every area of life.
Acronyms and initialisms are also abbreviations.


An acronym is created from the initial letters of a long name or phrase, and pronounced as a word, for example, NATO (North Atlantic Treaty Organization).
Since are acronyms are treated as words and pronounced as words, there are no full stops between the letters.

Examples of abbreviations:

A.D. Anno Domini
ad advertisement
adj. adjective
adv. adverb
a.m.  ante meridiem (before noon)
app application
B.C. Before Christ
e.g. exampli gratia (for example)
etc etcetera (and other things; and so on)
flu influenza (an illness)
i.e. id est (that is)
in. inch(es)
lb(s). pound(s) (from the Roman ‘libra’)
n.b. nota bene (note well; take notice)
oz ounce(s)
pl. plural
p.m. post meridiem (after noon)
p.s. post scriptum (written after)
p.t.o. please turn over
rhino rhinoceros
St. Saint or Street

Examples of acronyms:

AIDS Acquired Immune Deficiency Syndrome
LASER Light Amplification by Stimulated Emission of Radiation
NAFTA North American Free Trade Agreement
NASA National Aeronautical and Space Administration
NAFTA North American Free Trade Agreement
NASA National Aeronautical and Space Administration
OPEC Organization of the Petroleum Exporting Countries
PIN Personal Identification Number
RAM Random Access Memory
ROM Read Only Memory
Radar Radio detecting and ranging
Scuba Self-contained underwater breathing apparatus
UNICEF United Nations Children’s Fund
WASP White Anglo Saxon Protestant
WYSIWYG What You See Is What You Get