[countable, uncountable] the process of reducing something; the amount that something is reduced by synonym reduction 55–64 is the only age group among which volunteering has shown an overall decrease. Height does undergo some decrease with age. decrease in something Social explanations include a decrease in the birth rate and the financial independence of women. An improved security situation has enabled a marked decrease in the number of police deployed. decrease of something Results showed an increase of 15% in turnover but a decrease of 46% in profit. opposite increase2
Definition of decrease 2 noun from the Oxford Learner's Dictionary of Academic English
