1. occurring or existing before a launch or official introduction

1. the period or activities before a launch or official introduction

Examples

• The team conducted extensive prelaunch testing of the new software.
• Prelaunch marketing campaigns helped build excitement for the product.
• During the prelaunch phase, engineers identified several critical issues.
• The company’s prelaunch strategy included social media teasers.
• Prelaunch reviews from beta users were overwhelmingly positive.
• The prelaunch lasted six months before the official release.
• Investors were impressed by the thorough prelaunch preparation.