Someone skilled in dialectical idealism: someone able to arrive at historical conclusions through consideration of contradictions.
Someone skilled in dialectical materialism: someone able to arrive at socio-political conclusions through consideration of class differences.
Someone knowledgable about dialects.
Someone skilled in dialectics: someone able to arrive at logical conclusions through reasoned argument.
A person with extensive knowledge or ability in a given subject.
A player ranking just below master.
Extraordinarily capable or knowledgeable.
Characteristic of an expert.