adjectif satellite
1 : marked by diversity or difference; "the varying angles of roof slope"; "nature is infinitely variable"
2 : subject to change; "a changeable climate"; "the weather is uncertain"; "unsettled weather with rain and hail and sunshine coming one right after the other"
1 : liable to or capable of change
2 : such that alteration is possible; having a marked tendency to change
1 : a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity