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The Collaborative International Dictionary
Elucidator

Elucidator \E*lu"ci*da`tor\, n. One who explains or elucidates; an expositor.

Wiktionary
elucidator

n. One who elucidates.

Usage examples of "elucidator".

Ressler recognizes: Linus Pauling, Nobel laureate, supreme figure of American chemistry, he of vitamin C and the covalent bond, structural elucidator of any number of organic molecules, and nip-and-tuck runner-up to the three-dimensional solution of DNA.