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Septentrional

Septentrional is a mathematics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Septentrional rather than just read about it. In short: Septentrional, meaning "of the north", is a Latinate adjective sometimes used in English. It is a form of the Latin noun septentriones, which refers to the seven stars of The Plough (US colloquial name: Big Dipper), occasionally called the Septentrion.

Septentrional — main illustration
Septentrional — illustration

Key takeaways

  • Septentrional belongs to mathematics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Septentrional to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Septentrional from memory before moving on to harder problems.

Reference excerpt

Septentrional, meaning "of the north", is a Latinate adjective sometimes used in English. It is a form of the Latin noun septentriones, which refers to the seven stars of The Plough (US colloquial name: Big Dipper), occasionally called the Septentrion. In the 18th century, septentrional languages was a recognised term for the Germanic languages.

Etymology and background The Oxford English Dictionary gives the etymology of septentrional as:

[ad. L. septentrio, sing. of septentriōnēs, orig. septem triōnēs, the seven stars of the constellation of the Great Bear, f. septem seven + triōnes, pl. of trio plough-ox. Cf. F. septentrion.] "Septentrional" is more or less synonymous with the term "boreal", derived from Boreas, a Greek god of the North Wind. The constellation Ursa Major, containing the Plough or Wain (Wagon) (US colloquial name: Big Dipper), dominates the skies of the North. The usual antonym for septentrional is the term meridional, which refers to the midday sun.

Usage

The term septentrional is found on maps, mostly those made before 1700. Early maps of North America often refer to the northern- and northwesternmost unexplored areas of the continent as at the "Septentrional" and as "America Septentrionalis", sometimes with slightly varying spellings. Sometimes abbreviated to "Sep.", it was used in historical astronomy to indicate the northern direction on the celestial globe, together with Meridional ("Mer.") for southern, Oriental ("Ori.") for eastern and Occidental ("Occ.") for western. The linguistic usage in the 17th and 18th centuries was as an umbrella term. It described "the Germanic languages, usually with particular emphasis on Anglo-Saxon, Old Norse and Gothic." Writing of Johann Georg Keyßler in 1758, Thomas Gray distinguished between "Celtic" and "septentrional" antiquities. Thomas Percy actively criticised the blurring of the Celtic and the Germanic in the name of the "septentrional", while at the same time Ossianism favoured it. James Ingram in his inaugural lecture of 1807 called George Hickes "the first of septentrional scholars" for his pioneering lexicographical work on Anglo-Saxon. In current usage, "septentrional fiction" may refer to a setting in the Canadian North. In France, the term septentrional refers to the Northern stretch of the Côtes du Rhône AOC winemaking region. The Northern Rhône, or septentrional, runs along the Rhône river from Vienne in the north, to Montélimar in the south. It includes the eight crus: Côte Rôtie, Condrieu, Château-Grillet, Hermitage, Saint-Joseph, Crozes-Hermitage, Cornas and Saint-Péray. The Southern Rhône is referred to as the meridional (Rhône méridionale), and extends from Montélimar in the north, to Avignon in the south.

See also Septentrionalist Oriental Occidental Boreal Austral Myotis septentrionalis, the Northern Long-eared Bat Asplenium septentrionale, the Forked Spleenwort

Notes

References

Illustrations

Septentrional: A 17th-century map of France (1687), by Alain Manesson-Mallet, shows the Septentrion atop of the chart, indicating the northern region of the country; the other regions indicated are the Occident (west), the Orient (east), and the Midy (meridion).
A 17th-century map of France (1687), by Alain Manesson-Mallet, shows the Septentrion atop of the chart, indicating the northern region of the country; the other regions indicated are the Occident (west), the Orient (east), and the Midy (meridion).
Septentrional: The asterism of the Plough or Wain (Wagon) (US English colloquial name:Big Dipper) (shown in this star map in green) lies within the constellation of Ursa Major.
The asterism of the Plough or Wain (Wagon) (US English colloquial name:Big Dipper) (shown in this star map in green) lies within the constellation of Ursa Major.
Septentrional: Map of the "Septentrional Hemisphere"
Map of the "Septentrional Hemisphere"
Septentrional: Planisphere of the Septentrional Heavens, c. 1720
Planisphere of the Septentrional Heavens, c. 1720

Worked examples

Example 1 — a first encounter with Septentrional

Start with the simplest possible case. Write down what Septentrional claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In mathematics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Septentrional before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Septentrional ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Septentrional

In research
Septentrional appears in mathematics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Septentrional in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Septentrional is common in secondary-school and first-year university syllabi. It links to neighbouring topics Geography of the Arctic, Orientation (geometry), so understanding it makes those chapters shorter.
In everyday life
Look for Septentrional outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Septentrional in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Septentrional means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Septentrional out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Septentrional in simple terms?

Septentrional, meaning "of the north", is a Latinate adjective sometimes used in English. It is a form of the Latin noun septentriones, which refers to the seven stars of The Plough (US colloquial name: Big Dipper), occasionally called the Septentrion.

Why does Septentrional matter?

Because it connects several mathematics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Septentrional?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Septentrional.

Tags

  • Geography of the Arctic
  • Orientation (geometry)

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