indistinguishability

Definition

The quality or state of being impossible to tell apart or differentiate from something else, often used in quantum mechanics and philosophy to describe identical particles or concepts.

Example Usage

The indistinguishability of quantum electrons makes predicting their behavior fundamentally probabilistic.

Origin

From indistinguishable + -ity; a formal philosophical and scientific term.

Fun Fact

In quantum mechanics, two identical electrons are literally indistinguishable—swapping them produces no observable difference.

Source: Word-list API top-up / extra_long (hailey)

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