As a linguistics expert with a keen interest in the etymology of words, I find the question of why we refer to a single item as a "pair of scissors" quite fascinating. The term "pair" in this context is a historical linguistic artifact that has persisted through the centuries, and understanding its usage provides insight into the way language evolves and adapts to the objects it describes.

The use of the word "pair" with scissors is rooted in the fact that a functional scissors is typically made up of two interlocking blades that work in unison to cut. These two blades are symmetrical and are designed to pivot around a central axis, allowing for the shearing action that is characteristic of scissors. The blades are not independent tools but rather two halves of a single, cohesive unit. This is why, historically, they have been referred to as a "pair."

The etymology of the word "scissors" itself is quite interesting. As mentioned, it is derived from the Middle English word influenced by the Latin "scissor," which meant "cutter." The Middle Latin "scissor" was also associated with the concept of a "tailor," which makes sense when you consider that scissors have been a fundamental tool in the textile and clothing industry for centuries.

The American Heritage Dictionary provides a valuable perspective on the linguistic evolution of "scissors." It suggests that the term has been simplified over time, with "scissors" now being used to refer to the tool in the singular form, despite its composition of two parts. This simplification is not uncommon in language, as speakers often opt for convenience and brevity, leading to changes in the way words are used and understood.

It's also worth noting that this pattern of referring to a dual-component tool as a "pair" is not unique to scissors. Other items, such as shears, trousers, or pants, follow a similar linguistic pattern. This consistency in language usage across different objects suggests a broader cultural or linguistic convention at play.

In conclusion, the term "pair of scissors" is a reflection of the tool's design and functionality, where two parts come together to form a single, effective instrument. The historical use of "pair" in this context has been carried forward, even as the language has evolved and simplified to refer to the tool as "scissors" in the singular form. This usage provides a window into the fascinating ways in which language adapts to describe the world around us.

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A pair of scissors can be called simply "scissors". Same for a pair of shears, trousers or pants. The American Heritage Dictionary tells us that "scissors" comes to us from a Middle English word influenced by the Latin word "scissor" (cutter). Unabridged v 1.1 says that the Middle Latin "scissor" meant "tailor".)read more >>