A thousandth is one part out of 1,000 equal parts.
When we talk about measurements or comparisons, "thousandths" often comes up. For example, if someone says a product has a precision to 0.01 inches, that's talking about thousandths. This means it can be measured very accurately down to an extremely small fraction of an inch. You might see this in technical writing or when discussing the finer details of something. It's also related to decimals, so if you know how to work with decimals, understanding thousandths is pretty straightforward.
plural of thousandth
