rational in Wingdings is ❒︎♋︎⧫︎♓︎□︎■︎♋︎●︎

Expressing the type, structure, relations, and reactions of acompound; graphic; -- said of formulæ. See under Formula. Rationalhorizon. (Astron.) See Horizon, 2 (b).-- Rational quantity (Alg. ), one that can be expressed without theuse of a radical sign, or in extract parts of unity; -- opposed toirrational or radical quantity.-- Rational symptom (Med.), one elicited by the statements of thepatient himself and not as the result of a physical examination.