PPB
See also:
ppb
English
Etymology 1
Noun
PPB
pl
(
plural only
)
Initialism of
parts
per
billion
.
Etymology 2
Noun
PPB
(
plural
PPBs
)
(
economics
)
Initialism of
production
-
possibility
boundary
.
Synonyms
(
economics
)
:
PPC
,
PPF
Anagrams
BPP
,
PBP
,
bpp