very slow speed; extremely low speed
Technical term used in engineering, photography (e.g., time-lapse), and motion control to describe speeds far below normal.
We recorded the blooming of the flower using time-lapse photography.
This motor can be controlled at very low speeds.
Antonym: 高速度 means 'high speed', often used in similar technical contexts.
time-lapse photography
Compound of 微 (び, 'minute, very small') and 速度 (そくど, 'speed'). The exact historical derivation is uncertain, but the term is used in modern technical fields.