Longman Dictionary of Contemporary English homepage

overlap

1 verb
     
o‧ver‧lap1 past tense and past participle overlapped, present participle overlapping [intransitive and transitive]
1 if two or more things overlap, part of one thing covers part of another thing:
One of Jilly's front teeth overlaps the other.
The tiles on the roof overlap.
2 if two subjects, ideas etc overlap, they include some but not all of the same things:
Maxwell's responsibilities overlap yours, so you will be sharing some of the work.
overlap with
The study of sociology overlaps with the study of economics.
two great men with overlapping interests
3 if two activities or periods of time overlap, the second one starts before the first one has finished:
The second phase of development overlaps the first.
overlap with
My vacation overlaps with yours.

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