Famous acronyms you should definitely know the meaning of

IMAX: The IMAX in IMAX Theater actually stands for Image Maximum, which is a large-format movie theater.

RADAR: RADAR stands for the technology called "radio detection and ranging.

TASER: The electrical weapon is actually an acronym for Thomas A. 

SCUBA: This piece of diving equipment is an acronym for "self-contained underwater breathing apparatus.

SIM: An essential device in order to use your phone your SIM card is actually an abbreviation for "Subscriber Identity Module.

AM and PM: You probably use these acronyms every day.

NASA: The American space agency actually stands for National Aeronautics and Space Administration.

CAPTCHA: CAPTCHA stands for completely Automated Public Turing test to tell Computers and Humans Apart.

LASER: The letters in this word stands for Light Amplification by Stimulated Emission of Radiation.

Yahoo: You probably wouldn't have guessed this but Yahoo stands for Yet Another Hierarchically Organized Oracle.

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