science

Rule of nine (linguistics)

Rule of nine (linguistics) is a science 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 Rule of nine (linguistics) rather than just read about it. In short: The rule of nine (Ukrainian: Правило дев'ятки) is a orthographic rule of the Ukrainian language, which prohibits writing the letter "i" in loanwords after nine consonants (д, т, з, с, ц, ж, ш, ч, and р) if the next letter is a consonant (except for "й"). For example, the loanwords сигнал, динамо, режим, дизель, зиґзаґ, and принтер are written with the letter "и", rather than writing сігнал, дінамо, режім, дізель, зі…

Key takeaways

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

Reference excerpt

The rule of nine (Ukrainian: Правило дев'ятки) is a orthographic rule of the Ukrainian language, which prohibits writing the letter "i" in loanwords after nine consonants (д, т, з, с, ц, ж, ш, ч, and р) if the next letter is a consonant (except for "й"). For example, the loanwords сигнал, динамо, режим, дизель, зиґзаґ, and принтер are written with the letter "и", rather than writing сігнал, дінамо, режім, дізель, зіґзаґ, and прінтер. However, if the "i" in a loanword is followed by a vowel, then the rule of nine does not apply. For example, the loanwords діадема, діоптрія, тіофен, станція, адажіо, and Чіо-чіо-сан are written with the letter "i". Additionally, the letter "i" is used after these nine consonants if it appears at the end of an uninflected loanword, such as колібрі, парі, фрі, and таксі, though таксист is an exception to this rule. The current Ukrainian spelling lists the following exception to the rule of nine:

З «и», а не з «і» пишуться також слова церковного вжитку: диякон, єпископ, єпитимія, єпитрахиль, камилавка, митра, митрополит, християнство тощо.Words of ecclesiastical use are also written with "и" rather than "і": диякон, єпископ, єпитимія, єпитрахиль, камилавка, митра, митрополит, християнство, and so on. However, the 1999 Orthographic Dictionary of the Ukrainian language does not include this exception for church-related loanwords, such as архієпископ (archbishop), архієрей (bishop), архімандрит (archimandrite), клір (clergy), клірик (cleric). Furthermore, loanwords assimilated into the Ukrainian language are often written according to their pronunciation, rather than necessarily following the rule of nine, such as бурмистер (but бургомістр), вимпел, єхидна, імбир, кипарис, and лиман.

History The rule of nine for spelling words of foreign language origin was first formulated in 1913 by the authors of the grammar of the Ruthenian language, Stepan Smal-Stotsky and Theodor Gartner, modeled on a similar rule for the Polish language. The 1993 edition of the Ukrainian Spelling Book, which resembles previous editions and is still in force, extended the rule of nine to the proper names of foreign locations, such as Argentina, Chile, and Syria. The 1993 edition also extended the rule of nine to the words бравісимо, фортисимо, and піанісимо.

References

Bibliography Український правопис. § 90 (in Ukrainian) «Дев'ятки» правило / Енциклопедія «Українська мова». — К., 2000. — С. 123. (in Ukrainian) Олена Гузар. Правописний стандарт української мови: історія та реалії. Вісник Львів. університету. Серія філол. 2004. Вип. 34. Ч.ІІ. С.501-506 (in Ukrainian) Вік живи, вік перевчайся — неграмотним умреш. Олекса Негребецький «Україна молода» 2001.01.25 (in Ukrainian) Проєкт Правопису 1999 р. (in Ukrainian) Літери и та і в іншомовних загальних назвах. Термінологічно-правописний порадник для богословів та редакторів богословських текстів (in Ukrainian)

Worked examples

Example 1 — a first encounter with Rule of nine (linguistics)

Start with the simplest possible case. Write down what Rule of nine (linguistics) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Rule of nine (linguistics) 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 Rule of nine (linguistics) 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 Rule of nine (linguistics)

In research: Rule of nine (linguistics) appears in science 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 Rule of nine (linguistics) 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: Rule of nine (linguistics) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Spelling, Ukrainian language, so understanding it makes those chapters shorter.
In everyday life: Look for Rule of nine (linguistics) 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 Rule of nine (linguistics) in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Rule of nine (linguistics) means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Rule of nine (linguistics) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Rule of nine (linguistics) in simple terms?

Why does Rule of nine (linguistics) matter?

Because it connects several science 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 Rule of nine (linguistics)?

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 Rule of nine (linguistics).