ppb
See also: PPB
English
Noun
ppb (plural ppb)
- Initialism of parts per billion.
Synonyms
- (parts per billion): nU, nanouno
Related terms
- ppbv
- ppm
- ppt
- ppq
See also
- percent
- permille
- permyriad
Anagrams
- BPP, PBP, bpp