Etymology From Latin rōborāre (“to strengthen, to invigorate”) + -ive (“forming adjectives”) directly and via French roboratif, from rōbur (“reddish oak; hardness, strength”) + -āre (“forming verbs”). Equivalent to roborate + -ive.
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Medicine, SciencesArchaic, Rare Synonym of roborant: strengthening, invigorating, or restorative.
... leſt we ſhould have confuſedly congeſted Roborative and Purgative Trochisks together, as many do, and that perperouſly; we have adjoyned all the Cathartical, as Trochisks of Rhabarb, of Agarick, and of Alhandal, to the end of the third Section of our ſecond Book.1657, Richard Tomlinson, transl. Jean de Renou as A Medical Dispensatory..., Book III, Section III, p. 630
Etymology From Latin rōborāre (“to strengthen, to invigorate”) + -ive (“forming adjectives”) directly and via French roboratif, from rōbur (“reddish oak; hardness, strength”) + -āre (“forming verbs”). Equivalent to roborate + -ive.
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Medicine, SciencesArchaic, Rare Synonym of roborant: a strengthening, invigorating, or restorative medicine, food, or treatment.
VVe have hitherto exhibited Roboratives in the form of Powders, ſoft Electuaries, and Opiates...1657, Richard Tomlinson, transl. Jean Renou as A Medical Dispensatory..., Book III, Section III, p. 630