Home › Words › S › subsummitsubsummitsubsummit means A local peaked portion of a mountain etc., lower than the primary summit.Among words judged in Lexicurio's Arena, subsummit ranks #7,709 of 42,762 for Qualifying.EtymologyFrom sub- + summit.nounA local peaked portion of a mountain etc., lower than the primary summit.Definitions & examples from Wiktionary (CC BY-SA 3.0).