What does interlapping mean?
Overlapping describes a situation in which two objects, areas, events, or subjects partly cover one another or occur at the same time. Physical images of overlapping circles, windows, or pieces of paper are the clearest examples, but the word is also widely used for periods, responsibilities, research, and ideas. A schedule with overlapping appointments contains appointments that share some of the same time; two research projects with overlapping interests examine related subjects. The word suggests partial coincidence rather than complete identity, and it often implies that the shared elements coexist without necessarily forming a single unified whole. In professional contexts, it can help identify duplicate coverage or areas of cooperation. The expression “overlapping windows” is especially familiar, while figurative uses such as “overlapping interests” and “overlapping research” are common in discussion of work, policy, and culture.
adjectiveExtending over or meeting with part of another object, area, or time, so that the boundaries or activities partly coincide. In figurative use, it describes things that share some features or occur at the same time.
- Partly covering or meeting another object or area.
- Occurring partly at the same time as another event or period.
- Sharing features, subjects, or fields with another person or thing.
"The overlapping windows made it difficult to read the notices on the noticeboard."
"The interview involved overlapping questions from two members of the panel."
"Her research overlaps with the work being done at another laboratory."
When two ideas overlap, they do not merely touch: they share a space in which both can be active.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of interlapping
The word is formed by combining “inter-” with “overlap” and the present participle ending “-ing.” “Overlap” itself combines the Old English preposition “over” with “lap,” a word associated with folding or covering. Related English words such as “lapse,” “elapse,” and “collapse” ultimately reflect a shared Latin ancestry involving a form meaning to fall, slip, or slide. The modern sense of two areas or subjects partly coinciding developed from the idea of one thing lying over another.
Related word forms
How interlapping is actually used
The term is neutral in register and is common in both formal and informal English. It is especially useful for describing objects or areas that partly cover one another, periods that partly coincide, and subjects that share a common focus.