Webster's Revised Unabridged Dictionary · 1913

Methodic

Methodic , adjective

[Latin methodicus, Greek {not transcribed}: compare French méthodique.]

1.
Arranged with regard to method; disposed in a suitable manner, or in a manner to illustrate a subject, or to facilitate practical observation; well-ordered; as, the methodical arrangement of arguments; a methodical treatise.
Methodical regularity. — Addison
2.
Proceeding with regard to method; characterized by method or orderliness; systematic; as, a methodical investigation.
Aristotle, strict, methodic, and orderly. — Harris
3.
Of or pertaining to the ancient school of physicians called methodists. — Johnson

Also: Methodical