\Pa*thog`no*mon"ic\, a. [Gr. ? skilled in judging
of diseases; ? a disease + ? skilled: cf. F. pathognomonique.
See {Gnomic}.] (Med.)
Specially or decisively characteristic of a disease;
indicating with certainty a disease; as, a pathognomonic
symptom.
      The true pathognomonic sign of love jealousy.
                                               --Arbuthnot.