The origin of the at symbol (@) long before the modern internet.

A Origin of the at symbol (@) It dates back to centuries of linguistic, commercial, and technological evolution, long before the digital shift to the contemporary internet.

This famous character, essential for sending emails and tagging profiles on social networks, has a fascinating history that spans medieval monasteries, Iberian mercantile transactions, and typewriters.

What is the at symbol (@) and what is its medieval etymological root?

The word "arroba" derives directly from the Arabic term. ar-rub, which literally means one-quarter of a traditional unit of mass called a quintal.

During the Middle Ages, merchants in the Iberian Peninsula used this standardized measure, equivalent to about 15 kilograms, to quantify heavy agricultural goods such as olive oil, wine, and cereals.

Meanwhile, medieval copyist monks who transcribed texts in Latin created a simplified graphic ligature, joining the preposition ad (meaning “to” or “towards”) in a single continuous stroke.

Investigate the Origin of the at symbol (@) It reveals how the mercantile economy and religious calligraphy merged to create one of the most enduring graphic systems in human history.

When and where did the first documented records of the symbol appear?

The earliest known documentary evidence of the commercial use of the at symbol (@) is found in the manuscript. Taula de Ariza, written in Aragon in the year 1448.

This Catalan customs document recorded the sale of a shipment of wheat, where the graphic symbol clearly appeared abbreviating the weight of the goods traded between the Spanish merchants.

Another famous historical record is the letter from the Italian merchant Francesco Lapi, written in 1536 from Seville, where he detailed the sale of amphorae of wine sent to Rome.

To examine guidelines for the preservation of national historical heritage, rare documentary collections, and public policies for the conservation of Brazil's memory, access the... National Archives (AN).

This rich mercantile documentation proves that the character circulated widely through the commercial centers of the Mediterranean centuries before the industrial revolution and global computer networks.

What are the differences in the historical interpretation of the character around the world?

Throughout the centuries, different cultures have adopted the symbol for distinct purposes, alternating between measures of mass, accounting price indicators, and playful nicknames inspired by its spiral shape.

While continental Europe used the symbol to measure products, English-speaking countries adopted the graphic representation with the accounting meaning of at (with a unit value of).

The table below summarizes how different civilizations and languages interpreted the Origin of the at symbol (@) in commercial, accounting, and cultural contexts over time:

Analyzing these regional variations demonstrates the cultural plasticity of the character, adapting perfectly to the economic transformations and technological innovations of each era.

How was the symbol incorporated into typewriters and keyboards?

The transition from handwriting to typewriting at the end of the 19th century required the inclusion of practical accounting symbols on the keyboards of early commercial typewriters.

American engineers added graphics to the keys in the late 1880s because accountants needed to write commercial invoices that detailed the unit price of goods sold.

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This continued presence on standardized keyboards ensured that the character remained available on early computers and character selectors of the postwar computing era.

In this way, the Origin of the at symbol (@) It maintained its practical relevance, patiently awaiting the opportunity to be rediscovered by the pioneers of modern computing.

Why did Ray Tomlinson choose that character for his email address?

In 1971, American computer engineer Ray Tomlinson was looking for a gender-neutral character to separate the username from the destination computer name on the ARPANET network.

Tomlinson needed a signal that wasn't present in proper names or common vocabulary, thus avoiding processing conflicts in the first lines of email code.

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Looking at the keyboard of the Model 33 Teletype terminal, the scientist noticed that the character at It perfectly indicated the location of someone installed on a specific network server.

To search global historical collections, exhibitions on the development of science, and international bibliographic data, consult the Library of Congress (US).

This brilliant and functional choice transformed an old Iberian mercantile symbol into the greatest icon of connected interactive communication on the planet.

The fascinating cultural enduring nature of an ancestral symbol.

The character's trajectory perfectly exemplifies how ancient human inventions can be reborn with full force in the face of new technological and social needs.

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Understanding Origin of the at symbol (@) It teaches us to value the invisible bridges between the medieval spice trade and the instantaneous exchange of global data.

By tagging a friend or sending a digital message today, you perpetuate a linguistic and graphic tradition with over five hundred years of documented history.

FAQ (Frequently Asked Questions)

Is the arroba still used as a unit of weight measurement in Brazil?

Yes. In the Brazilian agribusiness sector, the arroba is an official standardized unit that is equivalent to exactly 15 kilograms for trading arrobas of fat cattle and cotton.

Who was the first person to send an email using the at symbol (@)?

Engineer Ray Tomlinson sent the first test message using the character in 1971, linking two computers that were physically side-by-side.

What do other countries call the at symbol (@) because of its shape?

Many cultures use animal names: in Italy it is called a snail (chiocciola), in Poland of monkey (małpa) and in Greece, duckling (pataki).

Is the at symbol (@) considered a work of art in design?

Yes. In 2010, the Museum of Modern Art in New York (MoMA) formally acquired the symbol for its permanent collection in the architecture and design category.

Written by Izabelle Kawamura

I've been a content strategist for over 4 years, helping brands transform technical topics into meaningful content for their readers. Throughout this time, I've worked in various niches, always combining SEO, audience behavior, and trends to create content that generates genuine connection, not just reach. I like to think that good content is content that explains, connects, and makes reading easy, without losing sight of the underlying intention.

Updated on July 21, 2026