millimilligram
English
Etymology
From
millimilli-
+
gram
/
milli-
+
milligram
.
Noun
millimilligram
(
plural
millimilligrams
)
(
rare and nonstandard
)
0.000001
grams
, as a unit of
mass
.
Synonyms
microgram
(
common and accepted
)
µg
(
symbol
)