What term describes a common-law marriage recognized after one year?

The term that describes a common-law marriage recognized after one year is "Usus." In Roman law, usus refers to a form of cohabitation that, if maintained for a full year, could lead to a legal recognition of the relationship akin to marriage. This concept illustrates how the duration of cohabitation can confer legal status similar to that of a formal marriage, reflecting an important aspect of Roman social and legal practices.

The other terms listed refer to different concepts in Roman law. For instance, "Contubernium" denotes a long-term partnership that does not possess the full legal status of marriage, often for slaves or individuals in a recognized informal relationship. "Tunica recta" refers to the traditional bridal garment worn during a formal marriage ceremony, highlighting the significance of formal marriages rather than cohabitation. "Bulla" is a type of protective amulet worn by children in ancient Rome and does not relate to marriage or cohabitation at all. Understanding these distinctions aids in a clearer comprehension of Roman legal and societal structures concerning marriage and relationships.