<p>I think that [ʊ] is associated with "latter part" of the vowel (diphthong) trascribed as <em>-ou</em> or <em>-iu</em> in <em>pinyin</em>.</p>

<blockquote>
  <p>What does [ʊ] have to do with O
</blockquote>

<p>[ʊ] is usually used to represent a sound like the vowel in "good" or "hood"
 (American English). This sound is also used to describe the second part of the diphthong in words like "so" and "bow", something like [soʊ] and [boʊ], respectively.</p>

<p>O&lt;5 and iO&lt;5 correspond to <em>-ou</em> and <em>-i(o)u</em> in <em>pinyin</em>, I think. By this sort of analysis, as the [ʊ] comes together with an [o] in like in the English example above, it looks like it got abbreviated with a weird symbol.</p>

<p>While I think that this is probably just be a typographical error as pointed out in the comments, it is important to remember that even a phonetic transcription system like IPA is a practical tool, not an airtight system for describing speech sounds. Relatively narrow IPA transcriptions might describe two languages as having an [a] vowel, for example, but the actual sounds realized in these languages (or even saying the same word in different contexts) necessarily will differ, as sound is not digital. What is essential with any transcripiton system is to capture meaningful contrasts, which <em>pinyin</em> seems to do an adequate job at.</p>

CC BY-SA 3.0
2017-08-12T21:39:10.057Z
2017-08-12T21:39:10.057Z
haksayng
<p>So I'm seeing this capital o (O) + subscript less-than sign (<sub>&lt;</sub>) combination in my list of finals in this book I just got:</p>
<p><a href="https://i.sstatic.net/v9emA.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/v9emA.jpg" alt="u" /></a></p>
<blockquote>
<p>O<sub>&lt;</sub>5</p>
<p>iO<sub>&lt;</sub>5</p>
</blockquote>
<p>The book also has fake Chinese IPA to real IPA translation:</p>
<p><a href="https://i.sstatic.net/VEZKP.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/VEZKP.jpg" alt="op" /></a></p>
<blockquote>
<p>O<sub>&lt;</sub>5</p>
<p>[ʊ]</p>
</blockquote>
<p>What does [ʊ] have to do with O<sub>&lt;</sub>?</p>

CC BY-SA 3.0
2017-04-05T16:39:59.147Z
This is more of a typography problem. If you print a "<" on top of the "o" so it overlaps, then I suppose it can approximate "ʊ".
Michaelyus
CC BY-SA 3.0
2017-04-06T02:52:13.880Z
Can you show the complete page image and the book name?
Sorry, I haven't seen that even when I learnt pinyin as a child.
Sedny LL
CC BY-SA 3.0
2017-04-06T03:08:38.367Z
@Michaelyus have you seen this before?
Mou某
<meaning>
What's this "O<" (capital O and subscript less-than sign) Sinological IPA transcription?
# What's this "O<" (capital O and subscript less-than sign) Sinological IPA transcription?

(Asked by: username_0 on 2017-04-05)

So I'm seeing this capital o (O) + subscript less-than sign (<) combination in my list of finals in this book I just got:

[![u](https://i.sstatic.net/v9emA.jpg)](https://i.sstatic.net/v9emA.jpg)

> O<5
>
> iO<5

The book also has fake Chinese IPA to real IPA translation:

[![op](https://i.sstatic.net/VEZKP.jpg)](https://i.sstatic.net/VEZKP.jpg)

> O<5
>
> [ʊ]

What does [ʊ] have to do with O<?

**Tags:** meaning

> **Comments:**
> **username_1**: This is more of a typography problem. If you print a "<" on top of the "o" so it overlaps, then I suppose it can approximate "ʊ".  
> **username_2**: Can you show the complete page image and the book name? Sorry, I haven't seen that even when I learnt pinyin as a child.  
> **username_0**: @username_1 have you seen this before?  

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## 1 answers

### Answer by username_3 on 2017-08-12. Score: 2 | Accepted answer

I think that [ʊ] is associated with "latter part" of the vowel (diphthong) trascribed as *-ou* or *-iu* in *pinyin*.

> What does [ʊ] have to do with O

[ʊ] is usually used to represent a sound like the vowel in "good" or "hood"
(American English). This sound is also used to describe the second part of the diphthong in words like "so" and "bow", something like [soʊ] and [boʊ], respectively.

O<5 and iO<5 correspond to *-ou* and *-i(o)u* in *pinyin*, I think. By this sort of analysis, as the [ʊ] comes together with an [o] in like in the English example above, it looks like it got abbreviated with a weird symbol.

While I think that this is probably just be a typographical error as pointed out in the comments, it is important to remember that even a phonetic transcription system like IPA is a practical tool, not an airtight system for describing speech sounds. Relatively narrow IPA transcriptions might describe two languages as having an [a] vowel, for example, but the actual sounds realized in these languages (or even saying the same word in different contexts) necessarily will differ, as sound is not digital. What is essential with any transcripiton system is to capture meaningful contrasts, which *pinyin* seems to do an adequate job at.


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