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  2. Attention deficit hyperactivity disorder - Wikipedia

    en.wikipedia.org/wiki/Attention_deficit...

    Attention deficit hyperactivity disorder; Other names: Formerly: Attention deficit disorder (ADD), hyperkinetic disorder (HD) [1]: ADHD arises from maldevelopment in brain regions such as the prefrontal cortex, basal ganglia and anterior cingulate cortex, which regulate the executive functions necessary for human self-regulation.

  3. Addition - Wikipedia

    en.wikipedia.org/wiki/Addition

    Convolution is used to add two independent random variables defined by distribution functions. Its usual definition combines integration, subtraction, and multiplication. [96] In general, convolution is useful as a kind of domain-side addition; by contrast, vector addition is a kind of range-side addition.

  4. ADD (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/ADD_(disambiguation)

    ADD is short for attention deficit disorder, and is an older name for attention deficit hyperactivity disorder. Add or ADD may also refer to: Entertainment

  5. Google Dictionary - Wikipedia

    en.wikipedia.org/wiki/Google_Dictionary

    Google Dictionary is an online dictionary service of Google that can be accessed with the "define" operator and other similar phrases [note 1] in Google Search. [2] It is also available in Google Translate and as a Google Chrome extension. The dictionary content is licensed from Oxford University Press's Oxford Languages. [3]

  6. Dictionary - Wikipedia

    en.wikipedia.org/wiki/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 logographic languages), which may include information on definitions ...

  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, ... OED Add. Ser. Vols. 1–2 1997: All: OED Add. Ser. Vol. 3 Origins

  8. Webster's Dictionary - Wikipedia

    en.wikipedia.org/wiki/Webster's_Dictionary

    Webster's Dictionary is any of the US English language dictionaries edited in the early 19th century by Noah Webster (1758–1843), ... To add new words, ...

  9. Merriam-Webster - Wikipedia

    en.wikipedia.org/wiki/Merriam-Webster

    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.