American English

Definition of capsule noun from the Oxford Advanced American Dictionary



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  1. 1a small container that has a measured amount of a medicine inside and dissolves when you swallow it The medicine can be taken in tablet or capsule form. Take two 100 mg capsules a day.
  2. 2a small plastic container with a substance or liquid inside
  3. 3the part of a spacecraft in which people travel and that often separates from the main rocket the cramped conditions of a space capsule
  4. 4(technology) a shell or container for seeds or eggs in some plants and animals see also time capsule

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