ppm

As a letter s

is the letter s with a.

As an initialism ppm is

(common) parts per million (10000 ppm = 1%).

As initialisms the difference between ppm and cpm

is that ppm is (common) parts per million (10000 ppm = 1%) while cpm is .

As an initialism ppm

is common Parts per million. (10000 ppm = 1%.

As a noun null is

a non-existent or empty value or set of values.

As an adjective null is

having no validity, "null and void.

As a verb null is

to nullify; to annul.

As a noun volt

is volt (unit of measure).

As an initialism ppm is

(common) parts per million (10000 ppm = 1%).

Ppbv is likely misspelled.

Ppbv has no English definition.

As an initialism ppm

is common Parts per million. (10000 ppm = 1%.

As initialisms the difference between ppm and mg

is that ppm is common Parts per million. (10000 ppm = 1% while MG is ("Morris Garages") A British sports-car manufacturer.

As a noun mole

is .

As an initialism ppm is

(common) parts per million (10000 ppm = 1%).

As initialisms the difference between wpm and ppm

is that wpm is words per minute while ppm is common Parts per million. (10000 ppm = 1%.

As initialisms the difference between fpm and ppm

is that fpm is feet per minute while ppm is common Parts per million. (10000 ppm = 1%.

As initialisms the difference between ppg and ppm

is that ppg is alternative case form of PPG while ppm is common Parts per million. (10000 ppm = 1%.

As an abbreviation PPG

is points per game.