exsertion

/ɛkˈsɜrʃən/
noun
  1. The act of thrusting out or protruding; the state of being extended outward.
    • The exsertion of the cat's claws happens when it feels threatened.
    • The exsertion of the plant's roots above ground was a sign of poor soil conditions.
    • Biologists studied the exsertion of the butterfly's proboscis during feeding.
Antonyms
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