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  2. Old Irish grammar - Wikipedia

    en.wikipedia.org/wiki/Old_Irish_grammar

    In later Old Irish, initial f s come to be written ḟ ṡ when lenited, with a dot (a so-called punctum delens) above the letter. Lenition occurs after: Certain case forms within a noun phrase, either of the noun or a preceding article or possessive. These include, at least: Nominative and vocative singular of all feminines

  3. Punctum - Wikipedia

    en.wikipedia.org/wiki/Punctum

    Punctum delens, typographic marks used to indicate deletion; Neume, the basic element of Western and Eastern systems of musical notation prior to the invention of five-line staff notation; Equant, punctum aequans, is a mathematical concept developed by Claudius Ptolemy in the 2nd century AD to account for the observed motion of heavenly bodies

  4. Dot (diacritic) - Wikipedia

    en.wikipedia.org/wiki/Dot_(diacritic)

    Language scripts or transcription schemes that use the dot above a letter as a diacritical mark: In some forms of Arabic romanization, ġ stands for ghayn (غ).; The Latin orthography for Chechen includes ċ, ç̇, ġ, q̇, and ẋ.

  5. Strikethrough - Wikipedia

    en.wikipedia.org/wiki/Strikethrough

    An example of strikethrough. Strikethrough, or strikeout, is a typographical presentation of words with a horizontal line through their center, resulting in text like this, sometimes an X or a forward slash is typed over the top instead of using a horizontal line. [1]

  6. Archimedean point - Wikipedia

    en.wikipedia.org/wiki/Archimedean_point

    An Archimedean point (Latin: Punctum Archimedis) is a hypothetical viewpoint from which certain objective truths can perfectly be perceived (also known as a God's-eye view) or a reliable starting point from which one may reason.

  7. Counterpoint - Wikipedia

    en.wikipedia.org/wiki/Counterpoint

    The term originates from the Latin punctus contra punctum meaning "point against point", i.e. "note against note". John Rahn describes counterpoint as follows: It is hard to write a beautiful song. It is harder to write several individually beautiful songs that, when sung simultaneously, sound as a more beautiful polyphonic whole.

  8. Blind spot (vision) - Wikipedia

    en.wikipedia.org/wiki/Blind_spot_(vision)

    Distribution of rods and cones along a line passing through the fovea and the blind spot of a human eye [1]. A blind spot, scotoma, is an obscuration of the visual field.A particular blind spot known as the physiological blind spot, "blind point", or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the ...

  9. Punctum (gastropod) - Wikipedia

    en.wikipedia.org/wiki/Punctum_(gastropod)

    Punctum is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the subfamily Punctinae of the family Punctidae, the dot snails. [ 2 ] Distribution