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noun cap·sule \ˈkap-səl, -(ˌ)sül also -ˌsyül\

Simple Definition of capsule

  • : a very small container that is filled with medicine and swallowed whole

  • : a small glass or plastic container that has something (such as a liquid) inside of it

  • : a small part of a spacecraft that is separate from the rest of the spacecraft and that is where people live and work

Full Definition of capsule

  1. 1 a :  a membrane or sac enclosing a body part (as a knee joint or kidney) b :  either of two layers of white matter in the cerebrum

  2. 2 :  a closed receptacle containing spores or seeds: as a :  a dry dehiscent usually many-seeded fruit composed of two or more carpels b :  the spore case of a moss

  3. 3 :  a shell usually of gelatin for packaging something (as a drug or vitamins); also :  a usually medicinal or nutritional preparation for oral use consisting of the shell and its contents

  4. 4 :  an often polysaccharide envelope surrounding a microorganism

  5. 5 :  an extremely brief condensation :  outline, survey

  6. 6 a :  a compact often sealed and detachable container or compartment b :  a small pressurized compartment or vehicle (as for space flight)

Examples of capsule

  1. <took an antibiotic capsule three times a day for a week>

  2. <a capsule containing all sorts of items from our era that is to be opened 100 years from now>

Origin of capsule

French, from Latin capsula, diminutive of capsa box — more at case

First Known Use: circa 1693



verb cap·sule

Definition of capsule


  1. transitive verb
  2. 1 :  to equip with or enclose in a capsule

  3. 2 :  to condense into or devise in a compact form

Examples of capsule

  1. <newscasts that capsule complex, important stories into one-minute bits for easy digestion by viewers>


First Known Use of capsule




adjective cap·sule

Simple Definition of capsule

  • : very short

Full Definition of capsule

  1. 1 :  extremely brief

  2. 2 :  small and very compact

CAPSULE Defined for Kids


noun cap·sule \ˈkap-səl\

Definition of capsule

  1. 1 :  a case enclosing the seeds or spores of a plant

  2. 2 :  a small case of material that contains medicine to be swallowed

  3. 3 :  a closed compartment for travel in space

Medical Dictionary


noun cap·sule \ˈkap-səl, -(ˌ)sül\

Medical Definition of capsule

  1. 1a:  a membrane or saclike structure enclosing a part or organ <the capsule of the kidney>b:  either of two layers or laminae of white matter in the cerebrum::  a layer that consists largely of fibers passing to and from the cerebral cortex and that lies internal to the lentiform nucleus—called also internal capsule:  one that lies between the lentiform nucleus and the claustrum—called also external capsule

  2. 2:  a shell usually of gelatin for packaging something (as a drug or vitamins); also :  a usually medicinal or nutritional preparation for oral use consisting of the shell and its contents

  3. 3:  a viscous or gelatinous often polysaccharide envelope surrounding certain microscopic organisms (as the pneumococcus)

Illustration of capsule

Seen and Heard

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February 8, 2016

to clear from accusation or blame

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