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底数 (ていすう) Japanese meaning | Kotomora

底てい数すう

Meanings

1

noun

Mathematical term for the base of a number system (e.g., base 10) or the base of a logarithm. Not used for physical bases or foundations.

10進しん法ほうの底てい数すうは10です。
The base of the decimal system is 10.
対たい数すうの底てい数すうを2に設せっ定ていする。
Set the base of the logarithm to 2.

Kanji

底bottom, sole, depth
数number, strength, fate

Similar words

基き数すう
基数 is more common for 'base' in number systems and also means 'cardinal number'. 底数 is a less frequent synonym used mainly in mathematical contexts.
底そこ
底 is a general word for 'bottom' or 'base' of a physical object, not a mathematical base.

Etymology

Compound of 底 (てい, 'base') and 数 (すう, 'number'). The exact historical derivation is uncertain; the spelling is conventionally associated with the mathematical meaning.