Définitions
1.NounA benchmark interest rate, from which other interest rates are calculated; a policy rate."On loans to higher-risk customers, the bank charges 5% above the base rate."
2.NounEspecially, the interest rate at which the Bank of England lends money to commercial banks.
3.NounThe background rate of occurrence of any phenomenon, which informs any logical analysis of its rate of occurrence under any subset of circumstances; especially, the proportion of individuals in a population who have a certain characteristic (e.g., trait, experience, circumstance), irrespective of any treatment effects in a treatment group of a scientific study.