Adjective
Without a center.
(group theory, of a group) Whose center is trivial (contains only the identity element).
Source: en.wiktionary.orgThe only real changes were a new set of lightweight side mirrors, MOMO Steering Wheel, Centerless console, racing seats, racing tow hook, a set of lower lip spoilers (R-Package), and a newly designed "Duck-Tail" trunk lid with integrated spoiler. Source: Internet
In Trenton Central’s case, those are Mercer County Community College for coursework and M&S Centerless Grinding in Hatboro, Pennsylvania, for mentors and internships. Source: Internet