小数点

Etymology
From.

Noun

 * 1) decimal point, radix point

Usage notes
A decimal point itself is pronounced as. For example, 9.58 is pronounced as and 19.19 is pronounced as. 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. is sometimes replaced with, especially when integer part is zero. For example, 0.31 is normally pronounced as or exceptionally pronounced as. In this case, integer part is sometimes omitted to pronounce. 0.3 can be read as.