Joining in marriage is a common practice in many cultures and religions around the world. It is a formal ceremony that unites two people in a legally binding union. The crossword solutions for the term 'join in marriage' are UNITE (5 letters) and WED (3 letters). UNITE is a verb meaning to come together as one, while WED is a verb meaning to marry someone. Both terms refer to the same act of joining two people in marriage.