The word "HIVRF" is spelled using the International Phonetic Alphabet (IPA) as [hɪv'ɑrɛf]. The first two letters, "HI", represent the abbreviation for Human Immunodeficiency Virus, while the latter three letters, "VRF", are short for Viral Resistance Factor. The word is often used in scientific studies to refer to a protein produced by HIV that enables the virus to resist the effects of antiretroviral drugs. The unique spelling of "HIVRF" helps to distinguish it from other HIV-related terms and ensures accurate communication within the scientific community.