1650s (n.) "medicine that induces vomiting;" 1660s (adj.) "inducing vomiting;" from French émétique (16c.), from Latin emeticus, from Greek emetikos "causing vomiting," from emesis "vomiting," from emein "to vomit," from PIE *weme- "to spit, vomit" (see vomit (v.)).
in medicine, "a drug which promotes or facilitates phlegm or other such matter from the body by means of expectoration," 1782, from Latin expectorantem (nominative expectorans), present participle of expectorare (see expectorate). From 1811 as an adjective.
early 15c., reiteracion, "repetition, a repeated action," originally in medicine, from Medieval Latin reiterationem (nominative reiteratio) "repetition, a repeating," noun of action from past-participle stem of Latin reiterare "to repeat" (see reiterate). Of statements, words, by 1650s.
1560s, originally in medicine, "pertaining to or derived from experience or experiments," from Latin empiricus (n.) "a physician guided by experience," from Greek empeirikos "experienced," from empeiria "experience; mere experience or practice without knowledge," especially in medicine, from empeiros "experienced (in a thing), proven by use," from assimilated form of en "in" (see en- (2)) + peira "trial, experiment," from PIE *per-ya-, suffixed form of root *per- (3) "to try, risk." With -al (1). In a general sense of "guided by mere experience" from 1757. Related: Empirically (1640s as "by means of observation and experiment").
"favorable to health, wholesome," 1540s, from Latin salubris "promoting health, healthful," from salus (genitive salutis) "welfare, health" (from PIE root *sol- "whole, well-kept"). Originally of foods, medicine; in reference to air, climate, etc., by 1610s. Related: Salubriously; salubriousness.