Greek letters are an essential part of mathematical and scientific notation. Whether you're working in physics, engineering, or any field that involves complex equations, you'll certainly be familiar with many Greek letters. However, when writing a paper or giving a presentation, it can be helpful to vary your language to keep your audience engaged. Some synonyms for "Greek letter" include "Hellenic symbol," "Greek character," "Greek symbol," "Grecian letter," and "alpha-numeric character." By using different words to describe these letters throughout your work, you can keep your writing fresh and interesting, while still conveying the necessary degree of precision and expertise.