de·duc·tion 
/dɪˈdʌkʃən/ noun
plural de·duc·tions /dɪˈdʌkʃən/ noun 1 a [noncount] : the act of taking away something (such as an amount of money) from a total
▪ He pays for his insurance by automatic payroll deduction. [=the money for his insurance is automatically taken out of his paycheck]
b [count] : something (such as an amount of money) that is or can be subtracted from a total
▪ The government is offering new tax deductions for small businesses. ▪ What is your pay after the deductions have been taken out? 2 a [noncount] : the act or process of using logic or reason to form a conclusion or opinion about something : the act or process of deducing something
▪ His guess was based on intuition rather than deduction.
b [count] : a conclusion or opinion that is based on logic or reason
▪ Our deduction was based on the information given to us at the time. ▪ It was a logical deduction.
▪ He pays for his insurance by automatic payroll deduction. [=the money for his insurance is automatically taken out of his paycheck]
b [count] : something (such as an amount of money) that is or can be subtracted from a total
▪ The government is offering new tax deductions for small businesses. ▪ What is your pay after the deductions have been taken out?
▪ His guess was based on intuition rather than deduction.
b [count] : a conclusion or opinion that is based on logic or reason
▪ Our deduction was based on the information given to us at the time. ▪ It was a logical deduction.
