noun
significant instant
Computing term for a point in time that carries special meaning in a system, such as a state change or event marker.
システムは有意瞬間ごとにログを記録する。
The system records a log at each significant instant.
Compound of 有意 (significant) and 瞬間 (instant). The exact origin is uncertain; likely a technical calque or coined term in computing contexts.