say it: TROH-juhn
trojan is a noun and adjective meaning "a native of ancient Troy". It carries 3 recorded senses.
a program that appears desirable but actually contains something harmful
“the contents of a trojan can be a virus or a worm”
“when he downloaded the free game it turned out to be a trojan horse”
of or relating to the ancient city of Troy or its inhabitants
“Trojan cities”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for trojan come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.