Prior/ˈpraɪər/ Definition 1 of 3Pro Tip 1/3Pre-event Condition Indicates requirement or action needed before another event can occur or continue. Prior registration is required to attend the seminar. Pro Tip 2/3Early Preparation Suggests planning or actions taken in advance to avoid issues or delays. He did the groundwork prior to the meeting. Pro Tip 3/3Not Immediate Refers to things that were relevant before the current context, not right now. The rules set prior weren't applicable today.