elucidate

To make (something) lucid (“bright, luminous; also, clear, transparent”).

To make (something) clear and understandable; to clarify, to illuminate, to shed light on.

Let me hear vvhat your ovvn conceptions are of the matter, if they tend to elucidate or reconcile.

Dining at Mr. [Samuel] Pepys's, Dr. Slayer shewed us an experiment of a wonderful nature, […] This matter or phosphorus was made out of human blood and urine, elucidating the vital flame or heate in animal bodys.

Clear, understandable.

There vvas not a greater Maſter of Perſpicuity, and elucidate Diſtinctions; vvhich look'd the better in his [John Williams'] Engliſh, that ran ſvveet upon his Tongue, eſpecially being ſet out vvith a graceful Facetiouſneſs, that hit the joint of the Matter: For his VVit, and his Judgment, never parted.