colour light signalling
(US color light signaling) Railways
noun
A system of signalling using colour light signals.
Origin
Early 20th century; earliest use found in Electric Railway Journal.
- ionic strength
- ion implantation
- ionise
- ioniser
- Ionism
- ionist
- ionium
- ionizable
- ionization
- ionization chamber
- ionization constant
- ionization current
- ionization energy
- ionization gage
- ionization gauge
- ionization potential
- ionize
- ionizer
- ionizing potential
- ionizing radiation
- ionogen
- ionogenic
- ionogram
- ionographic
- ionography