Prefix with decimal, in coding NYT crossword clue

The answer to the clue “Prefix with decimal, in coding” is **HEXA**.

The prefix “hexa-” comes from the Greek word for six and is used in technical and scientific contexts to denote six or base-16, as in **hexadecimal**. In coding and computer science, “hexadecimal” refers to a numeral system based on sixteen distinct symbols — 0 to 9 and A to F — and “hexa” is the prefix that introduces this format. It provides a more concise way to represent binary data.