say it: DAHY-uh-lawg
dialog is a noun meaning "a conversation between two persons". It carries 3 recorded senses.
a literary composition in the form of a conversation between two people
“he has read Plato's Dialogues in the original Greek”
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 dialog 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.