Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Excessive concern with outer circumstances or appearances.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Excessive regard to outward acts or appearances, especially in religion. The denial of internalism.
  • n. The act of judging by outward appearance or acts.
  • n. The belief that only things that can be observed by senses are real.

from the GNU version of the Collaborative International Dictionary of English

  • n. The quality of being manifest to the senses; external acts or appearances; regard for externals.
  • n. That philosophy or doctrine which recognizes or deals only with externals, or objects of sense perception; positivism; phenomenalism.

from The Century Dictionary and Cyclopedia

  • n. Same as phenomenalism.
  • n. Attention or devotion to externals; especially, undue regard to externals, as of religion.

Etymologies

c. 1840 external +‎ -ism (Wiktionary)

Examples

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