Webster's Revised Unabridged Dictionary · 1913

Regimen

Regimen (r?j"?*m?n) , noun

[Latin regimen, -inis, from regere to guide, to rule. See Right, and compare Regal, Régime, Regiment.]

1.
Orderly government; system of order; adminisration. — Hallam
2.
(Medicine) Any regulation or remedy which is intended to produce beneficial effects by gradual operation
(Medicine) a systematic course of diet, etc., pursed with a view to improving or preserving the health, or for the purpose of attaining some particular effect, as a reduction of flesh; -- sometimes used synonymously with hygiene.
3.
(a) (Grammar) A syntactical relation between words, as when one depends on another and is regulated by it in respect to case or mood; government.
(b)
(Grammar) The word or words governed.