小数点

See also: 小數點

Chinese

For pronunciation and definitions of 小数点 – see 小數點 (“radix point; decimal point”). (This term is the simplified form of 小數點).
Notes: Simplified Chinese is mainly used in Mainland China, Malaysia, and Singapore. Traditional Chinese is mainly used in Hong Kong, Macau, and Taiwan.

Japanese

Kanji in this term
小	数	点
しょう Grade: 1	すう Grade: 2	てん Grade: 2
on'yomi

Alternative spellings
小數點 (kyūjitai) 少数点

Etymology

From 小数(しょうすう) (shōsū, “decimal”) + 点(てん) (ten, “point, dot”).

Pronunciation

(Tokyo) しょーすうてん [shòósúꜜùtèǹ] (Nakadaka – [3])^[1]^[2]^[3]
IPA^(key): [ɕo̞ːsɨːtẽ̞ɴ]

Noun

小(しょう)数(すう)点(てん) • (shōsūten) ^{←せうすうてん (seusuuten)^?}

decimal point, radix point

Usage notes

A decimal point itself is pronounced as てん (ten, literally “dot”). For example, 9.58 is pronounced as きゅうてんごーはち (kyū ten gō hachi, literally “nine point five eight”) and 19.19 is pronounced as じゅうきゅうてんいちきゅう (jū-kyū ten ichi kyū, literally “ten-nine point one nine”).

９	きゅう (kyū)
・	てん (ten)
９	きゅう (kyū)
８	はち (hachi)

In vertical writing, [[.]] is replaced with ・. For example, 9.98 is written as 9・98 in vertical writhing. However its pronunciation does not change.

There is some exception. てん (ten, literally “dot”) is sometimes replaced with コンマ (konma, literally “comma”), especially when integer part is zero. For example, 0.31 is normally pronounced as れいてんさんいち (rei ten san ichi, literally “zero point three one”) or exceptionally pronounced as れいコンマさんいち (rei konma san ichi, literally “zero comma three one”). In this case, integer part is sometimes omitted to pronounce. 0.3 can be read as コンマさん (konma san, literally “comma three”).

Derived terms

浮(ふ)動(どう)小(しょう)数点(すうてん) (fudō shōsūten, “floating point representation”)
浮(ふ)動(どう)小(しょう)数点(すうてん)演算(えんざん)機(き)構(こう) (fudō shōsūten enzan kikō, “floating-point arithmetic unit”)

References

^ Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tokyo: Sanseidō, →ISBN
^ NHK Broadcasting Culture Research Institute, editor (1998), NHK日本語発音アクセント辞典 [NHK Japanese Pronunciation Accent Dictionary] (in Japanese), Tokyo: NHK Publishing, Inc., →ISBN
^ “小数点”, in 日本国語大辞典 [Nihon Kokugo Daijiten]‎^[1] (in Japanese), 2nd edition, Tokyo: Shogakukan, 2000-2002, released online 2007, →ISBN, concise edition entry available here

[DJR-1] Matsumura, Akira, editor (2006), 大辞林 [Daijirin] (in Japanese), Third edition, Tokyo: Sanseidō, →ISBN

[NHK-2] NHK Broadcasting Culture Research Institute, editor (1998), NHK日本語発音アクセント辞典 [NHK Japanese Pronunciation Accent Dictionary] (in Japanese), Tokyo: NHK Publishing, Inc., →ISBN

[NKD2-3] “小数点”, in 日本国語大辞典 [Nihon Kokugo Daijiten]‎^[1] (in Japanese), 2nd edition, Tokyo: Shogakukan, 2000-2002, released online 2007, →ISBN, concise edition entry available here

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