Ppt is a synonym of promil.
As an initialism ppt
is parts per trillion.
As a noun promil is
(rare|medicine) parts per thousand.
ppt
English
Initialism
(Initialism)
(head)
Parts per trillion.
Synonyms
* (parts per trillion) pU
Related terms
* ppm, ppb, ppq
See also
* (Parts-per notation)
* percent
* permille
* permyriad
promil
English
Noun
(-)
(rare, medicine) Parts per thousand
Synonyms
*ppt