Abbr.
Mrs. IS the abbreviation - the word is mistress.
Decibel is short dB.
Blvd.
Either "abbr." or "abbrev."
Its an abbriveation, if that's what you mean.
Coming from the latin words id est, meaning "in other words"
L for liters, ml for milliliters, cc for cubic centimeters, gal for gallon, pt for pint. There are many abbreviations for the different units of volume.
You would use the word "your" when writing about something that belongs or is conected to a person you are writing to. For example... I received your letter today. Or... What is your brother's name? The word "your" should not be confused with the abbrievation "You're," which is a contraction of the phrase "You are."
Yes, water can be purified using reverse osmosis, a process where water is passed through a semi-permeable membrane to remove impurities like salts, minerals, and contaminants. This method is commonly used in water treatment systems to produce clean drinking water.