From astro- + -fest. <span class="searchmatch">astrofest</span> (plural <span class="searchmatch">astrofests</span>) (rare) An astronomy-themed festival or exhibition. 2012, Lutz D. Schmadel, “(7167) Laupheim”, in Dictionary...
<span class="searchmatch">astrofests</span> plural of <span class="searchmatch">astrofest</span>...
-fest → jokefest English terms suffixed with -fest actionfest artfest <span class="searchmatch">astrofest</span> bashfest beerfest bitchfest blandfest bloodfest blubberfest blunderfest...
astroecology astroengineer astroengineering astroethical astroethics <span class="searchmatch">astrofest</span> astrogenesis astrogeny astrogeodesy astrogeodetic astrogeography astrogeological...