logic

The word 'logic' traces its lineage to the Greek logikē (technē), meaning "the art of reasoning," derived from logos (word, reason). This Greek term was absorbed into Latin as logica and later into Old French as logique, before entering Middle English. The core concept of logos in ancient philosophy encompassed not just speech but the underlying rational principle of the universe. Thus, the literal construction "pertaining to reason" evolved from a classical philosophical discipline into the modern abstract science of valid inference and the principles of sound reasoning applied in thought, argument, and systems.

Structure: log (word, reason) + ic (pertaining to) - log: From Greek logos, meaning "word, speech, reason, discourse." It functions as the core root conveying the concept of reasoned thought or speech. - ic: From Greek suffix -ikos, via Latin -icus, meaning "pertaining to" or "of the nature of." It functions as an adjectival suffix that forms nouns.