logical deduction

noun

UK /ˈlɒdʒɪkəl dɪˈdʌkʃən/

US /ˈlɑːdʒɪkəl dɪˈdʌkʃən/

Figuring out an answer by thinking step by step from facts you already know.

Using logical deduction, she knew the missing cookie must have been taken by her little brother.

SYNONYMS

reasoning inference deduction logical thinking syllogism

RELATED WORDS

logic conclusion premise analysis problem-solving

OTHER MEANINGS

2. A formal method in math and philosophy where conclusions follow necessarily from given statements.

The class practiced logical deduction by proving that all squares are rectangles.

3. The process detectives use to connect clues and solve a mystery.

Through logical deduction, the detective identified the thief from the muddy footprints.

4. In computing, a way for programs to reach conclusions from rules and facts.

The expert system used logical deduction to diagnose the machine's fault.