Regress, rē-gres′, n. passage back: return: power of returning: re-entry.—v.i. to go back: to return to a former place or state: (astron.) to move from east to west.—n. Regres′sion, act of going back or returning.—adj. Regress′ive, going back: returning.—adv. Regress′ively, in a regressive manner: by return. [L. regressus, perf. p. of regredire-, back, gradi, gressus, to step, go.]

Regret, rē-gret′, v.t. to grieve at: to remember with sorrow:—pr.p. regret′ting; pa.t. and pa.p. regret′ted.—n. sorrow for anything: concern: remorse: a written expression of regret.—adj. Regret′ful, full of regret.—adv. Regret′fully.—adj. Regret′table.—adv. Regret′tably. [O. Fr. regrater, to desire, prob. from L. re-, again, and an Old Low Ger. form, appearing in A.S. grǽtan, Goth. gretan, to weep, Scot. greet. Others explain as from L. re-, in neg. sense, and gratus, pleasing.]

Regrowth, rē-grōth′, n. a new growth.

Reguerdon, rē-gėr′dun, v.t. (Shak.) to reward.—n. (Shak.) a reward.—n. Reguer′donment.

Regula, reg′ū-la, n. a book of rules for a religious house: (archit.) one of the bands under a Doric triglyph or between the canals of the triglyphs:—pl. Reg′ulæ (-lē). [L. regula, a rule.]

Regular, reg′ū-lar, adj. according to rule, or to law, order, custom, established practice, or mode prescribed: in accordance with nature or art, or the ordinary form or course of things: governed by rule: uniform: periodical: unbroken: methodical, orderly, systematic: strict: pursued with steadiness: straight: level: instituted according to established forms: normal, natural: consistent: usual, customary: (gram.) according to ordinary rule, as 'regular verbs:' (bot.) symmetrical in form: (geom.) having all the sides and angles equal: belonging to the permanent or standing army—opp. to Militia and Volunteer: (coll.) thorough, out and out, as 'a regular deception:' as opp. to Secular in the R.C. Church, denoting monks, friars, &c. under a monastic rule.—n. a soldier belonging to the permanent army: a member of a religious order who has taken the three ordinary vows: (chron.) a number for each year, giving, added to the concurrents, the number of the day of the week on which the paschal full moon falls: a fixed number for each month serving to ascertain the day of the week, or the age of the moon, on the first day of any month.—n.pl. Regulā′ria, the regular sea-urchins.—n. Regularisā′tion.—v.t. Reg′ularise, to make regular.—n. Regular′ity, conformity to rule: method: uniformity.—adv. Reg′ularly.—n. Reg′ularness.—v.t. Reg′ulāte, to make regular: to adjust by rule: to subject to rules or restrictions: to put in good order.—ns. Reg′ulating-screw, in organ-building, a screw by which the dip of the digitals of the keyboard of an organ may be adjusted; Regulā′tion, act of regulating: state of being regulated: a rule or order prescribed: precept: law.—adj. Reg′ulātive, tending to regulate.—n. Reg′ulātor, one who, or that which, regulates: a lever which regulates the motion of a watch, &c.: anything that regulates motion.—adj. Reg′ulātory.—n.fem. Reg′ulātress. [L. regularisregula, a rule—regĕre, to rule.]

Regulus, reg′ū-lus, n. an intermediate and impure product in the smelting of metallic ores: antimony: the golden-crested wren.—adj. Reg′uline.—v.t. Reg′ulise. [L., 'little king.']

Regur, rē′gur, n. the rich black cotton soil of India, full of organic matter.—Also Rē′gar. [Hind.]

Regurgitate, rē-gur′ji-tāt, v.t. to throw or pour back from a deep place.—v.i. to be thrown or poured back:—pr.p. regur′gitāting; pa.p. regur′gitāted.—n. Regurgitā′tion, the act of pouring or flowing back. [O. Fr.,—Low L. regurgitāre, -ātumre-, back, gurges, gurgitis, a gulf.]

Reh, rā, n. a saline efflorescence which comes to the surface in extensive tracts of Upper India.