a quick, involuntary inhalation that follows a spasm of the diaphragm and is suddenly checked by closure of the glottis, producing a short, relatively sharp sound. Usually, hiccups. the condition of having such spasms: She got the hiccups just as she began to speak.
Mount Hood is part of the Cascade Volcanic Arc, which formed as a  result of the convergent boundary between the North American Plate  and the Juan de Fuca Plate.Edit.ransform boundary: when two plates grind past each other. Convergent boundary: when the two plates collide.
A subduction zone is where two lithospheric plates meet. Lithospheric plates otherwise known as Tectonic Plates are massive portions of the earths crust. Subduction only occurs when an oceanic plate is overtaken by a continental plate causing it to melt into the mantle.