Hecto- is a prefix used in the metric system to indicate a factor of 100. However, there are several synonyms for the word hecto- that can be used in different contexts. For example, centenary is a word used to describe a hundredth anniversary, while hectogram refers to a weight of 100 grams. Another example of a synonym for hecto- is "deca-", which is used to describe a factor of ten times 10. This prefix is often used in educational settings to describe the metric system, and can be helpful for simplifying complex calculations. In general, using synonyms for hecto- can help to clarify specific meanings and make communication more precise.