something that provides an approach to or preparation for an event or situation.

Origin of lead-up

1950–55; noun use of verb phrase lead up (to)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for lead-up

Contemporary Examples of lead-up

Historical Examples of lead-up

Word Origin and History for lead-up

1917, from lead (v.1) + up (adv.).

Online Etymology Dictionary, © 2010 Douglas Harper