- biconnected component
- biconnected graph
- biconnected space
- bicontinuity
- bicontinuous
- bicontinuous correspondence
- bicontinuous function
- bicontinuous isomorphism
- bicontinuous mapping
- bicontinuous phase
- bicontinuous phase; double continuous phase
- biconvex
- biconvex lens
- biconvex lens, double convex lens
- bicoreflective subcategory
- bicorn
- bicorn curve
- bicornuate uterus
- bicovector
- bicovering
- bicriterion
- bicritical graph
- bicritical point
- bicrystal
- bicrystal boundary