1
: a retaking possession
especially : entry by a lessor on leased premises on the tenant's failure to perform the conditions of the lease
2
: a second or new entry
3
: a playing card that will enable a player to regain the lead
4
: the action of reentering the earth's atmosphere after travel in space

Examples of reentry in a Sentence

Recent Examples on the Web
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The Mk21A builds on the design of the older Mk21 reentry vehicle. — Aamir Khollam, Interesting Engineering, 5 Nov. 2026 Some components are expected to survive reentry and may be found sprawled across hemispheres, NASA said. — News Editor, CBS News, 4 Nov. 2026 That put much of South and Central America, as well as parts of Africa, Southeast Asia and Australia, in its potential path, but most of the spacecraft’s likely reentry profile was over remote stretches of open ocean. — Adam Kovac, Scientific American, 4 Nov. 2026 It was designed to be a modern version of the three-stage Strypi sounding rocket used for for reentry vehicle and anti-missile target tests. — Elizabeth Howell, Space.com, 4 Nov. 2026 See All Example Sentences for reentry

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of reentry was in the 15th century

Browse Nearby Words

Cite this Entry

“Reentry.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reentry. Accessed 10 Nov. 2026.

Kids Definition

1
: a second or new entry
2
: the action of reentering the earth's atmosphere after travel in space

Medical Definition

plural reentries
: a cardiac mechanism that is held to explain certain abnormal heart actions (as tachycardia) and that involves the transmission of a wave of depolarization along an alternate pathway when the original pathway is blocked with return of the impulse along the blocked pathway when the alternate pathway is refractory and then transmission along the open pathway resulting in an abnormality

Legal Definition

: a retaking possession of property by a lessor or grantor in exercise of the right to do so upon the failure of the lessee or grantee to fulfill a covenant or condition see also power of termination at power sense 2b

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