The word "joined" refers to the action of connecting or linking two or more things together. It can also imply becoming a member of a group, organization, or activity. This word is often used to describe physical connections, such as two pieces of wood being joined together with glue, or metaphorical connections, such as people joining a club.
The word "joined" comes from the verb "join," which originates from the Old French "joindre," meaning "to join together," derived from the Latin "jungere," meaning "to join, unite." The root can be traced further back to the Proto-Indo-European root *yeu-, meaning "to join, unite."