Galena, Illinois. Galena is the largest city in and the county seat of Jo Daviess County, Illinois, with a population of 3,429 at the 2010 census. A 581-acre (235 ha) section of the city is listed on the National Register of Historic Places as the Galena Historic District.
noun. Influence from members of oneâs peer group: his behaviour was affected by drink and peer pressure. More example sentences. 1  At the age of twelve I was influenced by peer pressure and started to drink cider which is a popular drink among young people as it is cheap and strong.
Vapor Pressure Definition: The pressure exerted by a vapor in equilibrium with the solid or liquid phase of the same substance.Also, the partial pressure of the substance in the atmosphere above the solid or the liquid.By Anne Marie Helmenstine, Ph.D.hare. Vapor Pressure Definition: The pressure exerted by a vapor in equilibrium with the solid or liquid phase of the same substance. Also, the partial pressure of the substance in the atmosphere above the solid or the liquid. By Anne Marie Helmenstine, Ph.D.