ALL meanings of subbase
sub·base
S s - noun subbase Architecture. the lowest part of a base, as of a column, that consists of two or more horizontal members. 1
- noun subbase Mathematics. a collection of subsets of a topological space having the property that every open set of a given topology can be written as the union of intersections of finite numbers of sets in the collection. Compare base1 (def 13b). 1
- noun subbase the lowest part of a pedestal, base, or skirting 0
- noun subbase the lowest section of a base or pedestal that is divided horizontally 0