Ppb
ahd-5
abbreviation.
parts per billion
Wiktionary, Creative Commons Attribution/Share-Alike License
initialism.
parts
per
billion
Word Usage
"- Methane: Pre-Industrial: 715 ppb; Recent 1774 ppb*, Increase = 148\%"
Same Context
Words that are found in similar contexts
0-10
chimerium
mg/kg/day
ng=ml
pentavalent
Synonym
Words with the same meaning
nU
nanouno