say it: DEM-oh
demo is a noun and verb meaning "a visual presentation showing how something works". It carries 2 recorded senses.
a visual presentation showing how something works
“the lecture was accompanied by dramatic demonstrations”
“the lecturer shot off a pistol as a demonstration of the startle response”
give an exhibition of to an interested audience
“She shows her dogs frequently”
“We will demo the new software in Washington”
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 demo 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.