形容詞 viral:

1. relating to or caused by a virus

1. The study of viruses and viral diseases.
   病毒學(xué)一種病毒和病毒性疾病的研究
2. An acute contagious viral infection characterized by inflammation of the respiratory tract and by fever, chills, muscular pain, and prostration.
   流行性感冒一種急性的有傳染性的病毒感染，主要特征是呼吸道感染和發(fā)燒、寒戰(zhàn)、肌肉疼痛和虛脫
3. A gene that causes the transformation of normal cells into cancerous tumor cells, especially a viral gene that transforms a host cell into a tumor cell.
   致癌基因?qū)е抡＜?xì)胞轉(zhuǎn)變?yōu)榘┳兗?xì)胞的基因，尤其是一種把寄主的細(xì)胞變?yōu)槟[瘤細(xì)胞的病毒基因

vi.ral

adj.（形容詞）
Of, relating to, or caused by a virus.
病毒的：關(guān)于病毒的或由病毒引起的

【引伸】
vi.rally
adv.（副詞）