One of the simpler ways to answer is that an active volcano is one that has erupted since the last ice age (i.e., in the past ~10,000 years). The weakness with this definition, according to critics, is that a volcano may have erupted over the last few thousand years, but is not likely to erupt again soon. There are more than 1,500 volcanoes that could be active today. In other words, active volcanoes are those that have erupted since the last ice age.

An estimated 500 million people live near active volcanoes. Meaning of active volcano. An example of an active volcano is Mount St. Helens in the United States (US). As such, an "active volcano" can be best described as one that's currently in a state of regular eruptions. The definition of an active volcano is difficult to pin down, since single volcanoes can have networks of volcanic vents across their flanks. Signs of unrest such as unusual earthquake activity or significant new gas emissions are signs that a volcano is active. Maybe it's going off right now, or had an event in … An active volcano might be erupting or dormant. What does active volcano mean? Definition of active volcano in the dictionary. And Iceland, there can … volcanos) erupting or liable to erupt; "active volcanos" 2. volcano - a mountain formed by volcanic material eructation, extravasation, eruption - (of volcanos) pouring out fumes or lava (or a deposit so formed) active - (of e.g. A dormant volcano would then be one that hasn’t erupted in the past 10,000 years, but which is expected to erupt again. An active volcano is a volcano that has had at least one eruption during the past 10,000 years. That is the definition of active used by the Global Volcanism Program in their catalogs. Information and translations of active volcano in the most comprehensive dictionary definitions resource on the web. An active volcano might be erupting or dormant.