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  2. Time - Wikipedia

    en.wikipedia.org/wiki/Time

    Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, and into the future. It is a component quantity of various measurements used to sequence events, to compare the duration of events or the intervals between them, and to quantify rates of change of quantities in material reality or in the conscious ...

  3. Webster's Dictionary - Wikipedia

    en.wikipedia.org/wiki/Webster's_Dictionary

    Webster's International Dictionary (1890 and 1900) 1896 advertisement for the 1890 International edition. Porter also edited the succeeding edition, Webster's International Dictionary of the English Language (1890), which was an expansion of the American Dictionary. It contained about 175,000 entries.

  4. Online Etymology Dictionary - Wikipedia

    en.wikipedia.org/wiki/Online_Etymology_Dictionary

    The Online Etymology Dictionary or Etymonline, sometimes abbreviated as OED (not to be confused with the Oxford English Dictionary, which the site often cites), is a free online dictionary that describes the origins of English words, written and compiled by Douglas R. Harper. [1]

  5. Dictionary - Wikipedia

    en.wikipedia.org/wiki/Dictionary

    Dictionary. Langenscheidt dictionaries in various languages. A multi-volume Latin dictionary by Egidio Forcellini. Dictionary definition entries. A dictionary is a listing of lexemes from the lexicon of one or more specific languages, often arranged alphabetically (or by consonantal root for Semitic languages or radical and stroke for ...

  6. Merriam-Webster - Wikipedia

    en.wikipedia.org/wiki/Merriam-Webster

    merriam-webster .com. Merriam-Webster, Incorporated is an American company that publishes reference books and is mostly known for its dictionaries. It is the oldest dictionary publisher in the United States. [1] In 1831, George and Charles Merriam founded the company as G & C Merriam Co. in Springfield, Massachusetts.

  7. Oxford English Dictionary - Wikipedia

    en.wikipedia.org/wiki/Oxford_English_Dictionary

    The Oxford English Dictionary ( OED) is the principal historical dictionary of the English language, published by Oxford University Press (OUP). It traces the historical development of the English language, providing a comprehensive resource to scholars and academic researchers, as well as describing usage in its many variations throughout the ...

  8. Operational definition - Wikipedia

    en.wikipedia.org/wiki/Operational_definition

    An operational definition specifies concrete, replicable procedures designed to represent a construct. In the words of American psychologist S.S. Stevens (1935), "An operation is the performance which we execute in order to make known a concept." [1] [2] For example, an operational definition of "fear" (the construct) often includes measurable ...

  9. Definition - Wikipedia

    en.wikipedia.org/wiki/Definition

    A definition states the meaning of a word using other words. This is sometimes challenging. Common dictionaries contain lexical descriptive definitions, but there are various types of definition – all with different purposes and focuses. A definition is a statement of the meaning of a term (a word, phrase, or other set of symbols).