IPA: /prəʊˈvaɪrəl/
KK: /proʊˈvaɪrəl/
Relating to a provirus, which is a virus that has integrated its genetic material into the DNA of a host cell.
The proviral DNA can remain dormant within the host's genome for years before becoming active.
Proviral is formed from "pro-" (meaning for or in favor of) and "viral" (from Latin "virus", meaning poison or toxin). The term refers to something that is in favor of or related to a virus.
Think of 'pro-' meaning in favor of something, and 'viral' relating to a virus — so proviral means something that supports or is associated with a virus.