"Dose" is a measured portion of a medicine. I am not aware of any volcanic ash clouds that have anything to do with measured quantities of medication!
The volcanic eruption spewed ash and lava into the sky, causing widespread destruction and chaos.
A volcanic explosion is an eruption.
what does key mean in math
about
'About' means 'Approximately.'. pi is about 3.14 pi is approximately 3.14 pi is NOT equal to 3.14 pi is an irrational numbers which means that the decimals go to infinity. So any value given for 'pi' is only an approximation/about. pi ~ 3.14 pi~ 3.1416 pi ~ 3.141592 pi = 3.141592....
a
I do not know of such a word related to math(s)
There is no such math word, so it does not mean anything. You may wish to check your spelling before posting questions!
the word by means 'times' or 'multiply'
The word at means the least
it mean per rate
arithemetic mean