1. producing or characterized by eruptions - an eruptive disease • Pertains to noun: eruption 2. produced by the action of fire or intense heat - rocks formed by igneous agents • Syn: igneous • Ant: aqueous (for: igneous) • Topics: geology 3. actively spewing out lava - a geyser is an intermittently eruptive hot spring • Similar to: active • Derivationally related forms: erupt