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  2. Pneumonoultramicroscopicsilicovolcanoconiosis - Wikipedia

    en.wikipedia.org/wiki/Pneumonoultramicroscopicsi...

    Subsequently, the word was used in Frank Scully's puzzle book Bedside Manna, after which time, members of the N.P.L. campaigned to include the word in major dictionaries. [9] [10] This 45-letter word, referred to as "p45", [11] first appeared in the 1939 supplement to the Merriam-Webster New International Dictionary, Second Edition. [12]

  3. List of chemical compounds with unusual names - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_compounds...

    Chemical nomenclature, replete as it is with compounds with very complex names, is a repository for some names that may be considered unusual. A browse through the Physical Constants of Organic Compounds in the CRC Handbook of Chemistry and Physics (a fundamental resource) will reveal not just the whimsical work of chemists, but the sometimes peculiar compound names that occur as the ...

  4. Longest word in English - Wikipedia

    en.wikipedia.org/wiki/Longest_word_in_English

    According to Eckler, the longest words likely to be encountered in general text are deinstitutionalization and counterrevolutionaries, with 22 letters each. [17] A computer study of over a million samples of normal English prose found that the longest word one is likely to encounter on an everyday basis is uncharacteristically, at 20 letters. [18]

  5. 20 Longest Words in English and Their Meanings (Plus ... - AOL

    www.aol.com/lifestyle/20-longest-words-english...

    From technical to whimsical, prepare for your vocabulary to be stretched with 20 of the longest words in English. Plus, find out what they mean. Related: 55 Examples of Onomatopoeia

  6. What Is the Longest Word in English? Hint: It’s 189,819 ...

    www.aol.com/lifestyle/longest-word-english-hint...

    I know the longest word in the whole English language,” Jimmy tells Jenny by the playground swings. It's antidisestablishmentarianism. Jenny slurps up the last of her juice box, unimpressed.

  7. Longest words - Wikipedia

    en.wikipedia.org/wiki/Longest_words

    The longest word in any given language depends on the word formation rules of each specific language, and on the types of words allowed for consideration. Agglutinative languages allow for the creation of long words via compounding. Words consisting of hundreds, or even thousands of characters have been coined. Even non-agglutinative languages ...

  8. IUPAC nomenclature of organic chemistry - Wikipedia

    en.wikipedia.org/wiki/IUPAC_nomenclature_of...

    The longest possible main alkane chain is used; therefore 3-ethyl-4-methylhexane instead of 2,3-diethylpentane, even though these describe equivalent structures. The di-, tri- etc. prefixes are ignored for the purpose of alphabetical ordering of side chains (e.g. 3-ethyl-2,4-dimethylpentane, not 2,4-dimethyl-3-ethylpentane).

  9. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...