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terminator

[tur-muh-ney-ter] /ˈtɜr məˌneɪ tər/
noun
1.
a person or thing that terminates.
2.
Astronomy. the dividing line between the illuminated and the unilluminated part of a satellite or planet, especially the moon.
Origin
1760-1770
1760-70; < Late Latin terminātor, equivalent to terminā(re) to terminate + -tor -tor
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for terminator
  • Even my boyfriend's dad wants one for his, he works and he is an ex-terminator and he wants to use it to check for bedbugs.
  • At the poles, a line drawn across the moon that connects the terminator ends runs perpendicular to the horizon.
British Dictionary definitions for terminator

terminator

/ˈtɜːmɪˌneɪtə/
noun
1.
the line dividing the illuminated and dark part of the moon or a planet
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for terminator
n.

1770, "line of separation between the bright and dark parts of a moon or planet," from Latin terminator, from terminare (see terminus). Meaning "one who terminates (something)" is attested from 1846.

Online Etymology Dictionary, © 2010 Douglas Harper
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terminator in Technology

electronics
A resistor connected to a signal wire in a bus or network for the purpose of impedance matching to prevent reflections.
For example, a 50 ohm resistor connected across the end of an Ethernet cable. SCSI chains and some LocalTalk wiring schemes also require terminators.
(1995-05-17)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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