noun, noun which may take the genitive case particle 'no'
low speed; slow speed
Refers to a state or condition of moving or operating at a low speed. Often used in technical contexts (e.g., vehicles, internet, machinery) but also in general descriptions.
The car is traveling at low speed.
Low-speed driving is mandatory on this road.
With a slow internet connection, videos tend to buffer.
This elevator is currently running at low speed.
The motor rotates at low speed.
定速 (same reading as 低速) means 'constant speed', not 'low speed', so the two are easily mixed up by ear.
Compound of 低 (てい, 'low') and 速 (そく, 'speed').