IPA: /ˌpriːəˈnaʊns/
KK: /priˈænˌaʊns/
To make an announcement before the official time or date.
The company will preannounce the new product next week.
Past: preannounced
Past Participle: preannounced
Preannounce → It is formed from "pre-" (meaning before) and "announce" (from Latin "annuntiare", meaning to proclaim or declare). The word "preannounce" means to declare or proclaim something before it happens.
Think of announcing something 'before' it happens — 'pre-' means before, and 'announce' means to declare.