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  2. Free-turbine turboshaft - Wikipedia

    en.wikipedia.org/wiki/Free-turbine_turboshaft

    The combustion gases are expanded through a compressor-driving turbine, and then through a "free" power turbine before being exhausted to the atmosphere. The compressor and its turbine are connected by a common shaft which, together with the combustor, is known as a gas generator, which is modelled using the Brayton Cycle. The (free) power ...

  3. Backronym - Wikipedia

    en.wikipedia.org/wiki/Backronym

    An example of a backronym as a mnemonic is the Apgar score, used to assess the health of newborn babies.The rating system was devised by and named after Virginia Apgar.Ten years after the initial publication, the backronym APGAR was coined in the US as a mnemonic learning aid: appearance, pulse, grimace, activity, and respiration. [6]

  4. Unpaired word - Wikipedia

    en.wikipedia.org/wiki/Unpaired_word

    An unpaired word is one that, according to the usual rules of the language, would appear to have a related word but does not. [1] Such words usually have a prefix or suffix that would imply that there is an antonym , with the prefix or suffix being absent or opposite.

  5. Glossary of North American railway terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_North_American...

    So termed by the similar appearance of the model name to the word pooch: P30CH / POOCH. [193] Position light signal (Pennsylvania) Signals made by the Pennsylvania Railroad that make use of a circular disc with up to eight lights mounted in a circle, with one light in the center. The lights would line up in a straight line to give the indication.

  6. Aptronym - Wikipedia

    en.wikipedia.org/wiki/Aptronym

    An aptronym, aptonym, or euonym is a personal name aptly or peculiarly suited to its owner (e.g. their occupation). [1] Gene Weingarten of The Washington Post coined the word inaptonym as an antonym for "aptonym". [2] The word "euonym" (eu-+ -onym), dated to late 1800, is defined as "a name well suited to the person, place, or thing named". [3]

  7. List of onomatopoeias - Wikipedia

    en.wikipedia.org/wiki/List_of_onomatopoeias

    This is an accepted version of this page This is the latest accepted revision, reviewed on 14 January 2025. This is a list of onomatopoeias, i.e. words that imitate, resemble, or suggest the source of the sound that they describe. For more information, see the linked articles. Human vocal sounds Achoo, Atishoo, the sound of a sneeze Ahem, a sound made to clear the throat or to draw attention ...

  8. Electric generator - Wikipedia

    en.wikipedia.org/wiki/Electric_generator

    A homopolar generator is a DC electrical generator comprising an electrically conductive disc or cylinder rotating in a plane perpendicular to a uniform static magnetic field. A potential difference is created between the center of the disc and the rim (or ends of the cylinder), the electrical polarity depending on the direction of rotation and ...

  9. Wikipedia:Proper names and proper nouns - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:Proper_names_and...

    A proper name in linguistics – and in the specific sense employed at Wikipedia – is normally a kind of noun phrase. That is, it has a noun or perhaps another noun phrase as its core component (or head), and perhaps one or more modifiers. Most proper names have a proper noun as their head: Old Trafford; Bloody Mary.