Rate/reɪt/ Definition 1 of 5Pro Tip 1/3Time Frame Contextualize the rate with a specific period to clarify speed. The construction project progressed at a rate of two floors per month. Pro Tip 2/3Rate Comparisons Use rates to compare situations or items to imply faster or slower progress. Her typing rate is faster than his, at 90 words per minute. Pro Tip 3/3Variable Measurements Rates can apply to various activities and different units of measure. They read at a rate of one book per week.