motility

• 名词，指生物体或细胞自发、独立运动的能力，包括改变位置而不移动整体所在位置的内部运动。

A noun referring to the capacity for spontaneous and independent movement, including changes in position without a change of location.

不可数

1. Spontaneous movementC1formalmedical

   The ability of an organism or cell to move independently and without external force.

   自发运动

   • Sperm motility is essential for successful fertilization.
   • The doctor assessed the motility of the patient's digestive system.
   • Bacterial motility allows them to navigate toward nutrients.

   同义词locomotionmobilitymotionmovement

   反义词fixityimmobilityinertness

2. Positional changeC2formalscientific

   A change in position or orientation that does not involve moving from one location to another.

   活动性

   • The motility of the joints was examined during the physical therapy session.
   • Certain plants exhibit motility by turning their leaves toward the sun.
   • The motility of the eye muscles allows for precise tracking of objects.