from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A contagious disease of freshwater fishes, caused by a ciliated protozoan (Ichthyophthirius multifiliis) and characterized by small white pustules on the skin and eyes.

from The Century Dictionary.

  • A Middle English form of each.
  • noun An abbreviation of ichthyology.
  • A form of I, the nominative of the first personal pronoun, in the southern dialect of early English, and occasionally found in the midland dialect.

from the GNU version of the Collaborative International Dictionary of English.

  • pronoun obsolete I.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun ichthyology Ichthyophthiriasis, a parasitic infection of freshwater fish caused by the ciliate Ichthyophthirius
  • pronoun personal, obsolete I.


from The American Heritage® Dictionary of the English Language, 4th Edition

[Short for New Latin Ichthyophthīrius, genus name : ichthyo– + Greek phtheir, louse.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Shortening of ichthyophthiriasis.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English ich, from Old English  ("I", pronoun), from Proto-Germanic *ek (“I”, pronoun), from Proto-Indo-European *éǵh₂ (“I”). See also ch-, I.


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