from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Characteristic or symptomatic of a particular disease or condition.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. diagnostic beyond any doubt for a particular disease.
from the GNU version of the Collaborative International Dictionary of English
- adj. Specially or decisively characteristic of a disease; indicating with certainty a disease.
from The Century Dictionary and Cyclopedia
- In medicine, indicating that by which a disease may be certainly known; hence, belonging to or inseparable from a disease, being found in it and in no other; characteristic: as, pathognomonic symptoms.
Greek pathognōmonikos : patho-, patho- + gnōmonikos, able to judge (from gnōmōn, interpreter; see gnō- in Indo-European roots).(American Heritage® Dictionary of the English Language, Fourth Edition)