Definition

1. Noun:
   • The ability to move spontaneously and independently: This refers to the inherent capacity of an organism or cell to initiate and perform movement using its own energy.
   • Movement, motion: This refers to an act or instance of changing position, especially one that does not involve a change in physical location.

Usage and Examples

• Noun (Ability to move):
  • The motility of sperm is crucial for fertilization.
  • Certain diseases can impair intestinal motility.
• Noun (Instance of movement):
  • The constant motility of the amoeba was observed under the microscope.
  • Gastrointestinal motility refers to the movement of food through the digestive tract.

Advanced Usage

• Scientific/Medical Context: The term is frequently used in biology and medicine to describe the movement capacity of microorganisms, cells (like sperm), or organs (like the intestines).
  • Researchers studied the bacterial motility in various environments.
  • A motility disorder can cause significant digestive problems.

Variants and Related Words

• Motile (adj): Describing something capable of spontaneous movement.
  • Motile bacteria can swim toward nutrients.
• Immobility (n): The state of not being able to move; the opposite of motility.
• Locomotion (n): The act or power of moving from place to place. (Note: This often implies a change of location, whereas 'motility' can include movement in place).

Synonyms

• Mobility: The ability to move or be moved freely and easily.
• Motion: The action or process of moving.
• Movement: An act of changing physical location or position.

Antonyms

• Immobility: The state of not moving.
• Paralysis: The loss of the ability to move.
• Stasis: A period or state of inactivity or equilibrium.

Noun

1. a change of position that does not entail a change of location
   • the reflex motion of his eyebrows revealed his surprise
   • movement is a sign of life
   • an impatient move of his hand
   • gastrointestinal motility
2. ability to move spontaneously and independently