mercury vapour rectifier
(US mercury vapor rectifier)
noun
= mercury arc rectifier.
Origin
Early 20th century.
- Black Forest
- Black Forest cake
- Black Forest gateau
- black fox
- Black Friar
- Black Friday
- black-fronted
- black-fronted tern
- black frost
- black fungus
- black game
- black gang
- black ginger
- black goby
- black gold
- black gooseberry
- black gospel
- black gown
- black gram
- black grass
- black grouse
- black growth
- blackguard
- blackguardery
- blackguardise