pathogenic

Etymology

It is formed from English patho- + -genic, after pathogeny;^[2][3][4] Merriam-Webster counts it as a word of the International Scientific Vocabulary.^[5][6] The OED compares French pathogénique (1811), German pathogenisch (recorded by 1834) and New Latin pathogenicus (by 1822),^[2] and Etymonline takes the English word from the French one.^[7] Patho- is from the Hellenistic Greek combining form of Ancient Greek πάθος (páthos, “suffering, disease”),^[2][7] and -genic is formed from French -gène or its source Ancient Greek -γενής (-genḗs), with -ic.^[2] Etymonline traces the Greek noun to Proto-Indo-European *kʷentʰ- (“to suffer”).^[7] The noun pathogen, first recorded in 1880, was formed after it.^[2][7]

Earliest recorded meaning

Producing physical disease: 1850, in the title of a work.^[2] Merriam-Webster also dates the word to 1850, and Etymonline to 1836.^[5][7]

Semantic evolution

The word belongs to a family of 19th-century medical terms built on patho-, beside pathogeny (1842) and pathogenesis.^[2] In the 20th century it spread to psychiatry, for what causes mental illness, first in a 1909 translation of Freud,^[2][3] and since 1969 it has been used figuratively for what is morally or socially unhealthy.^[2][3]

Timeline

• 1850 – producing physical disease.^[2][5]
• 1909 – causing mental illness.^[2]
• 1969 – figuratively, morally or socially harmful.^[2]

Meanings

Adjective

1. Able to cause disease: pathogenic fungi.^[8][5][9][2]
2. Of or relating to the origin and development of disease; pathogenetic.^[5][9][2]
3. (psychiatry) Causing or tending to cause mental illness.^[2][3]
4. (figurative) Morally or socially unhealthy.^[2][3]

Word family

• pathogenically
• pathogenicity
• nonpathogenic
• antipathogenic
• cytopathogenic

Related words

• pathology
• pathogen
• pathogenesis
• pathogeny
• pathos
• patho-
• -genic

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f g h i j k l m n o p Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d e Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
4. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
5. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
6. ^ Gove, Philip Babcock, ed. (1961), Webster's Third New International Dictionary of the English Language, Unabridged, Springfield, Mass.: G. & C. Merriam
7. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
8. ^ Collins English Dictionary (2023), Glasgow: HarperCollins
9. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt