1) Intellect 2) Intellectual 3) Synthesiser 4) Synthesizer 5) User of deductive reasoning 1) Synthesiser 2) Synthesizer 
• (n.) One who employs synthesis, or who follows synthetic methods.
Syn'the·sist noun One who employs synthesis, or who follows synthetic methods. 
[n] - an intellectual who synthesizes or uses synthetic methods
synthesist 1. An intellectual who synthesizes or uses synthetic methods. 2. Someone who composes or combines parts or elements so as to form a whole.
synthesizer noun an intellectual who synthesizes or uses synthetic methods