Words filled with meaning

Why you should never say "ATM machine"

Compared to other languages, English employs a relatively high number of acronyms and initialisms. According to linguists, this happens because English words tend to be short, and the word order is quite strict. While initialisms are easy to distinguish because they are not pronounced as a word, we don’t always recognize acronyms, especially when they refer to everyday things. Here are 11 popular acronyms and initialisms and their meaning.

When the scuba was invented in 1952 by Christian J. Lambertsen, it had a different name that, coincidentally, was also an acronym. Lambertsen had named his invention LARU, or ‘Lambertsen Amphibious Respiratory Unit’, but he changed it when it was time to apply for a patent. The name in the patent application was SCUBA, after ‘Self-Contained Underwater Breathing Apparatus’. Nowadays, scuba is a word of its own and has developed into words like scuba-diving.

In 1955, scientists who had developed a microwave radiation technology patented it as MASER or ‘Microwave Amplification by Stimulated Emission of Radiation’. A few years later, American physicist Gordon Gould developed a similar technology, this time using light instead of microwaves. Following the pattern of MASER, he registered it as LASER or ‘Light Amplification by Stimulated Emission of Radiation’. While the scientific community initially referred to this technology as the "optical maser", Gould’s acronym quickly became the preferred term.

If you’ve ever used the phrase "ATM machine", you need to know that you’re saying ‘machine’ twice. But don’t worry, this is a common error stemming from the fact that many people don’t know that ATM stands for ‘Automated Teller Machine’, a name that creates a parallelism between ATMs and bank tellers. Although the ATM was installed in 1967 in a London bank, no one really knows who was the first to call it ‘ATM’ instead of ‘cash-dispensing machine’.

The use of radio waves as a detection mechanism dates back to the late 19th century, but it was not properly developed until the 1920s, when the U.S. Navy started creating the first modern radars. By the Second World War, most military powers were using radio wave detection, but the technology did not have a name. In 1940, Lieutenant-Commanders Samuel M. Tucker and F. R. Furth of the U.S. Navy decided to come up with a code name and, after trying several phrases, landed on ‘Radio Detection And Ranging’, or RADAR.

If you are not familiar with the term CAPTCHA, you might recognize it as the test used by websites to make sure that you are human and not a robot. While clicking a box or selecting a picture is simple for a human, it’s extremely hard for a machine. What does the term CAPTCHA stand for? ‘Completely Automated Public Turing test to tell Computers and Humans Apart’. The name contains a reference to the Turing test —a method used to check if machines can behave like humans— and the acronym also functions as a portmanteau of ‘capture’ and ‘gotcha’.

If you follow international politics, you might have heard about NATO, a military alliance between several countries, the U.S. included. But have you ever wondered what NATO stands for? This alliance was established with the signing of the 1949 North Atlantic Treaty by several European and North American nations, and its name stands for ‘North Atlantic Treaty Organization’.

The discussions around GIF tend to focus on whether it’s pronounced "gif" or "jif", and one would think that the meaning of the acronym would shed some light on the matter, but it doesn’t. GIF stands for ‘Graphics Interchange Format’, a reference to its development to transfer compressed images across computers. While the ‘g’ in ‘graphic’ would suggest that the correct pronunciation is "gif", creator Steve Wilhite has stated that the acronym was modelled after the peanut butter brand Jif, and should be pronounced in the same way.

The BBC is one of the most famous broadcasters in the world, and its name is so iconic that it has evolved from an initialism to the official name for the company. Established in 1923 as the British Broadcasting Company, initialized as BBC, it became officially known as the BBC when the company transitioned from private to public. The BBC has become so connected with standard British culture that "BBC English" has been historically promoted as the standard speech for newscasters and network announcers.

Nowadays, we use the term CEO in corporate settings, but did you know that its origins are military and political? The first records of CEO as ‘Chief Executive Officer’ date back to legal and government texts from the 1780s, and the term is used in reference to leaders and state governors. However, the term would not become popular until the 1970s, when it was adopted by the corporate world for the highest-ranking person in a company.

When acronyms for an invention include a name, it’s often the name of its inventor. But sometimes, as it happened with the TASER, they include a name that has nothing to do with the person behind the invention. The TASER was developed by Jack Cover, but its acronym stands for ‘Tom A. Swift's Electric Rifle’. Who is Tom Swift? The protagonist of the 1911 science fiction novel_._ Cover added the ‘A’ initial to the name to make the acronym easier to pronounce.

When the U.S. Postal Service created its postal code system, also known as a ZIP code, they used an acronym for the name, but the meaning of the acronym was not really important. ZIP stands for ‘Zone Improvement Plan’, but this phrase doesn’t make complete sense. This is because the USPS was more interested in using the name ZIP to convey the idea that using postal codes would make deliveries faster and more efficient than what these letters stood for.

The 12 longest-living animals on Earth (and how they cheat time)

Nature doesn’t just create beauty, it crafts survival miracles. While most animals have short lives, a rare few have mastered the art of staying alive for centuries, even millennia. These aren’t just long-lived creatures; they’re nature’s ultimate time travelers. From the frozen depths of the oceans to the darkest corners underground, they’ve developed bizarre, brilliant strategies to cheat death. Get ready to meet 12 animals whose lifespans will absolutely blow your mind.

Record age: up to 15,000 years

This unassuming sea sponge thrives in the freezing waters of Antarctica, where temperatures hover around 28.6 °F—so cold that biological processes hit the brakes. In such icy conditions, metabolism slows to a crawl, allowing these sponges to live for thousands of years.

Some have reached impressive sizes of over 3 feet tall and have been around since mammoths were still thundering across the tundra. They don’t move, they don’t stress, and they barely change, just quietly existing while centuries pass them by. Their secret to extreme longevity? Glacial patience, deep-sea stillness, and a lifestyle that redefines "low-maintenance".

Age: technically… infinite

This tiny jellyfish, no bigger than a fingernail—less than 0.2 inches—is like the ocean’s very own Benjamin Button. What makes it truly extraordinary is its ability to rewind its life story, flipping back to a youthful, juvenile stage whenever it wants. While it’s not completely invincible (predators and other threats are still very real), if left undisturbed, it can keep hitting the reset button on aging indefinitely, making it one of the most fascinating "time-benders" in nature.

Record age: 507 years

In 2006, a special clam was discovered buried deep in the seabeds of the North Atlantic. Scientists were able to determine that it had been there since at least 1499—that’s centuries before the United States was even a thought! This ancient marvel, nicknamed "Ming", was able to perfect a slow-and-steady approach to life. Growing at a snail’s pace and barely budging, Ming’s sedentary lifestyle turned out to be a brilliant strategy for beating the clock. Who knew doing almost nothing could be the ultimate secret to longevity?

Record age: estimated 392 years

These sharks aren’t your average ocean cruisers—they can stretch over 20 feet long and weigh up to 2,200 pounds. But what’s really mindblowing is how slowly they move, like they’re in a permanent state of deep relaxation. Living in the icy Arctic waters, these giants don’t hit adulthood until they’re about 150 years old, and some can glide through the depths for nearly 400 years. Imagine that! These ancient swimmers were already around before America declared independence... and they are still out there, silently roaming the seas!

Record age: over 211 years

This whale is a true ocean giant, stretching up to 60 feet long and weighing a staggering 200,000 pounds. But what makes it stand out isn’t just its size but its age. Some of these majestic creatures carry harpoons from the 1800s still lodged in their skin, like walking history books. Just picture living so long that you’re literally carrying outdated technology embedded in your body—talk about being a time traveler of the seas!

Record age: 200 years

Spanning the chilly Pacific coastline from California all the way up to Alaska, this spiky little ball—about 7 inches across—is full of surprises. It munches on algae and calls the deep, dark ocean its home, thriving at depths of up to 300 feet. Don’t let its size fool you: this prickly creature is a true elder of the cold seas, quietly outliving many ocean neighbors while keeping a low profile. A tough, slow-living veteran wrapped in spikes!

Record age: 226 years

Meet Hanako, a legendary Japanese koi who swam through life for an astonishing 226 years. Scientists discovered how old she was by studying the rings on her scales, much like counting the growth rings of a tree. These colorful, ornamental fish aren’t just symbols of good fortune; they’re also secret long-lifers with the potential to celebrate over two centuries of birthdays, as long as they get the right care and a peaceful pond to call home.

Record age: 190 years

Jonathan is a male tortoise living on the remote island of Saint Helena in the South Atlantic Ocean. He was born back in 1832, and he’s still happily chomping lettuce and soaking up the sun today. Weighing in at more than 400 pounds and measuring around 3 feet long, Jonathan holds the title of the oldest known living land animal on the planet. If he could share tales, they’d span nearly two centuries of history. Imagine that!

Record age: 152 years

This ancient-looking fish, with its whisker-like barbels, looking like a tiny underwater submarine, prowls the lakes of North America. It can reach an impressive length of up to 7 feet and weigh around 200 pounds. These slow-living creatures don’t rush into adulthood—they start breeding only around age 20—and then take their time cruising through life at a leisurely pace. Believe it or not, one legendary catch in Wisconsin was estimated to be over 150 years old!

Record age: over 90 years

This chunky, night-loving parrot from New Zealand is a true oddball—it can’t fly, snores like a grumpy grandpa, and smells like fresh flowers. Despite its quirks, this bird boasts an impressively long lifespan. Sadly, it teeters on the edge of extinction. The oldest known kakapo, affectionately named Richard Henry, lived 90 years, earning him the title of the charmingly eccentric elder statesman of the avian world.

Record age: 37 years

This tiny, kooky rodent—barely 3 inches long and just over an ounce in weight—could’ve been cast straight from a sci-fi apocalypse flick. Dwelling in vast underground colonies across Africa, it’s practically invincible to cancer, pain, and the usual effects of aging. Scientists are fascinated by this little marvel, even if it’s not winning beauty contests anytime soon. Its superpowers make it a star in longevity research!

Record age: estimated 100+ years

Lobsters have a totally different rulebook than us when it comes to aging. They don’t really grow old; they just keep getting bigger and bigger. Some giant lobsters weigh over 40 pounds and stretch beyond 3 feet long. Their biggest threats? Not old age, but predators or the risky process of shedding their shells. In theory, they could live forever if left alone—but let’s be honest, not many get to enjoy a peaceful, lobster-sized retirement!