achronal; atemporal; non-temporal
Physics term describing something that does not involve or depend on time, often used in contrast to 時間的 (temporal).
See also: 時間的
Achronal phenomena are discussed in certain fields of physics.
This theory assumes an atemporal structure.
Means 'temporal' or 'time-related'; 非時間的 is its direct antonym in physics contexts.
Formed from 非 (non-) + 時間的 (temporal). The exact derivation is straightforward; the term is a technical neologism in physics.