what is a millogram

http://www.thefreedictionary.com/Milligrams

I apologize, but it seems that there might be a typographical error in your question. There is no unit of measurement called "millogram." However, there is a unit of measurement called "milligram," which is commonly used to measure small amounts of weight or mass.

A milligram (mg) is equal to one thousandth of a gram (g). To get an idea of how small a milligram is, imagine dividing a typical aspirin tablet into a thousand equal parts – each of those tiny parts would be roughly equal to one milligram.

If you have any further questions or if you meant to ask about something else, please let me know!