Last Updated：2025/11/20

(physics) vacuum; a space free of matter. / Used other than figuratively or idiomatically: see free, space.

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free space

Source Word

free space

countable uncountable

(physics) vacuum; a space free of matter. / Used other than figuratively or idiomatically: see free, space.

Japanese Meaning

真空；物質が存在しない空間

Measurements of spontaneous emission rates in free space provide a baseline for comparing cavity-enhanced systems.

真空中での自発放射率の測定は、共振器で増強された系と比較するための基準を提供する。

Sense（1）

(physics) vacuum; a space free of matter.

Sense（2）

Used other than figuratively or idiomatically: see free, space.

Take your things up to the attic: there's some free space there.

free spaces

（ plural ）