The term IV PART is composed of two words: TUBE and INTRA. TUBE is a 4-letter word that refers to a long, hollow cylinder made of metal, plastic, or other material, used for carrying liquids or gases, or for structural support. INTRA is a 5-letter word that means 'WITHIN' or 'INSIDE'. Together, the two words form the term IV PART, which is short for intravenous partum, a medical procedure in which a drug or other substance is injected directly into a vein. This procedure is commonly used to administer medications or fluids, or to provide nutrition to patients who cannot eat or drink.