noun
kinesis
Biological term for undirected movement of an organism in response to a stimulus, such as humidity or light intensity, where the rate of movement changes but not the direction.
湿度が高いと、ダンゴムシのキネシスが活発になる。
When humidity is high, the kinesis of pill bugs becomes more active.
キネシスは走性とは異なり、方向性を持たない反応です。
Kinesis, unlike taxis, is a non-directional response.