HIV /ˌeɪtʃ aɪ ˈviː◂/ noun [uncountableU] MIHBHa type of virus (=a very small living thing that causes disease) that enters the body through blood or sexual activity, and can develop into AIDS 人类免疫缺陷病毒,艾滋病病毒 → AIDSHIV positive/negative (=having or not having HIV in your body) 艾滋病病毒检测呈阳性的/阴性的