Logos to the ancient philosophers meant reasoning and word. its definition from ancient times is "word, speech, discourse, story, cause, communication, doctrine, purpose, preaching, thought, mind, plan, activity, statement, expression. Dr James White and other Trinitarian apologists (including their dictionaries/Lexicons, see logos as meaning second person of the Trinity.)Which in the ancient past was a foreign idea, which no one would of even considered.
Logos is the root of the word logic, God's logic, thought, expression became His expressed image
Hebrews 1:3,
Colossians 1:15.