The command form of command!
The verb can also be translated: make firm, establish, appoint, arrange, charge or ordain.
Adding a "mem" to the beginning: מִצְוָה, meetsVAH creates the related noun: "commandment". MeetsVAH may also be translated as "precept" or "law". In Modern Judiaism, it denotes "charity" or a "good deed". These are especially focused on during the 10 days between Yom Teruah and Yom Kippur!
How about that, two for one day with Hebrew Word of the Day!