Webster's Revised Unabridged Dictionary · 1913

Logical

Logical (loj"i*kal) , adjective

[Compare French logique, Latin logicus, Greek logiko`s.]

1.
Of or pertaining to logic; used in logic; as, logical subtilties. — Bacon
2.
According to the rules of logic; as, a logical argument or inference; the reasoning is logical; a logical argument; a logical impossibility. — Prior
3.
Skilled in logic; versed in the art of thinking and reasoning; as, he is a logical thinker. — Addison