a competitor who is at the back of a field in a race
- Back matter
the parts of a book that appear after the main text, as bibliography, index, and appendixes. Historical Examples Spaced dashes used in some back matter for better wrapping of text. Bert Wilson at the Wheel J. W. Duffield noun the parts of a book, such as the index and appendices, that follow the main text […]
- Back molding
a molding, as a backband, applied to interior window and door trim to conceal the edge of the wall surface.
to undergo back mutation. verb in genetics, to revert to a former non-mutated condition Usage Note science
- Back mutation
a mutation of an existing mutant gene that restores it to its previous form. noun (genetics) the reversion of a mutant to the original phenotype noun See reverse mutation