膨胀[Chinois]

nom
1 : the act of expanding by pressure from within
2 : the increase in volume of certain substances when they are heated (often accompanied by release of water)
3 : the act of expanding an aperture
4 : something that bulges out or is protuberant or projects from its surroundings
5 : the act of increasing (something) in size or volume or quantity or scope
verbe
1 : extend in one or more directions