凹凸

Chinese

FWOTD – 14 August 2014

		a depression; indentation; concave a depression; indentation; concave; hollow	(adj.) convex; stick out
simp. and trad. (凹凸)		凹	凸
anagram		凸凹

凹凸

uneven; bumpy; rugged
- 不是我無食力身軀閃這一滑，多管是少人行山路凹凸。 [Classical Chinese, trad.]
  不是我无食力身躯闪这一滑，多管是少人行山路凹凸。 [Classical Chinese, simp.]
  From: 14th century, Poetry by Qin Jianfu
  Bùshì wǒ wú shílì shēnqū shǎn zhè yī huá, duōguǎn shì shǎo rén xíng shānlù āotū. [Pinyin]
  The reason I slipped is not because my starving body was feeble; it was due to the roughness of the mountain road since not many people had walked on this.
(optics, mathematics) concavo-convex
論文是有關實解析函數在極值點附近的凹凸性的。 [MSC, trad.]
论文是有关实解析函数在极值点附近的凹凸性的。 [MSC, simp.]
Lùnwén shì yǒuguān shíjiěxīhánshù zài jízhídiǎn fùjìn de āotūxìng de. [Pinyin]
The journal article was about concavo-convexity of real analytic functions near extremities.

Sino-Xenic (凹凸):

/aputotu/ → /aɸutotu/ → */awutot͡su/ → /autot͡su/ → /ɔːtot͡su/ → /oːtot͡su/

Ultimately from Middle Chinese 凹凸 (MC 'eap dwot). Appears in texts from at least the 1600s.[1]

凹(おう)凸(とつ) • (ōtotsu) ^{←あふとつ (afutotu)^?}

that which has a non-flat surface; uneven, bumpy
路面(ろめん)凹凸(おうとつ)あり
Romen ōtotsu ari
Caution: rough road ahead

Shōgaku Tosho (1988) 国語大辞典（新装版） [Unabridged Dictionary of Japanese (Revised Edition)] (in Japanese), Tōkyō: Shogakukan, →ISBN
Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tōkyō: Sanseidō, →ISBN

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