from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A single-anode, mercury-vapor rectifier in which current passes as an arc between the anode and a mercury-pool cathode, used in power rectification.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A form of
rectifierhaving a pool of mercuryas cathode
from The American Heritage® Dictionary of the English Language, 4th Edition
[igni(te) + –tron.]
Brad Warbiany: According to the email: "10KV, 30KJ cap bank, mercury ignitron switch.