Dictionary

unpaired

adjective un·paired \-ˈperd\

Definition of UNPAIRED

:  not paired: as
a :  not matched or mated
b :  being an electron that doesn't share its orbital with another electron

Examples of UNPAIRED

  1. <found an unpaired shoe in the back of the closet>

First Known Use of UNPAIRED

1648

Related to UNPAIRED

unpaired

adjective un·paired \ˌən-ˈpa(ə)rd, -ˈpe(ə)rd\   (Medical Dictionary)

Medical Definition of UNPAIRED

1
a :  not paired; especially :  not matched or mated b :  characterized by the absence of pairing <electrons in the unpaired state>
2
:  situated in the median plane of the body <an unpaired anatomical part>; also :  not matched by a corresponding part on the opposite side

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