What does cotemporaneous mean?
Cotemporaneous is a formal adjective meaning existing or occurring at the same time as something else. It is especially useful when two documents, events, discoveries, or cultural developments need to be placed within the same period. For example, archaeologists may describe two artifacts as cotemporaneous if evidence indicates that they were made or used at the same time. The word is more precise than simply calling two things “from the same period,” because it directly expresses simultaneity. It is also more specialized than the everyday adjective “contemporary,” which can refer either to something belonging to the present or to something existing alongside another thing. Although less common in ordinary conversation, cotemporaneous appears naturally in historical, archaeological, scientific, and literary criticism. Its Latin-derived form gives it a formal, authoritative tone, making it especially suitable for precise writing.
adjectiveExisting or occurring at the same time as another event, person, or period.
- Existing or occurring at the same time as something else.
"The exhibition presents the early photographs as a cotemporaneous series, emphasizing that they were taken during the same period."
"The two inscriptions are cotemporaneous, although they were discovered in different parts of the site."
"Her research focuses on cotemporaneous accounts from several regions, allowing scholars to compare how the same event was described at the time."
Cotemporaneous captures the exact idea of being there at the same time—not merely being from the same era.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does cotemporaneous come from?
Cotemporaneous comes from Latin contemporaneus, meaning “at the same time” or “of the same period.” The Latin word combines temporaneus, derived from tempus (“time”), with a prefix indicating togetherness or combination. The English word entered use in the early modern period and developed alongside the more familiar contemporary.
Related word forms
How cotemporaneous is actually used
This is a formal and relatively uncommon word. It is most often used in historical, archaeological, scientific, or scholarly writing when emphasizing that events or developments occurred at the same time.
Easily confused with cotemporaneous
Cotemporaneous means existing or occurring at the same time as something else, while contemporary can also mean belonging to the present era or being current in style.