1, The full form of DVM is Digital Voltmeter. It’s used on Academic & Science ,Electronics in Worldwide

Digital Voltmeters (DVMs) are a special case of A/Ds. DVMs are voltmeters – i.e. they measure voltage – and are general purpose instruments commonly used to measure voltages in labs and in the field. DVMs display the measured voltage using LCDs or LEDs to display the result in a floating point format. They are an instrument of choice for voltage measurements in all kinds of situations.

2, The full form of DVM is Doctor of Veterinary Medicine. It’s used on Animal Kingdom ,Pets & Domesticated in United States

To become a veterinarian one must earn a Doctor of Veterinary Medicine (D.V.M. or V.M.D.) degree from an accredited college of veterinary medicine. Veterinarians provide healthcare for pets, livestock, and zoo, sporting, and laboratory animals.