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ty·roalso ti·ro (tī′rō)
n. pl. ty·ros also ti·ros
A beginner in learning something.
[Medieval Latin tȳrō, squire, variant of Latin tīrō, recruit.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Astronautics) one of a series of US weather satellites carrying infrared and television camera equipment for transmitting meteorological data to the earth
[C20: from T(elevision and) I(nfra-)R(ed) O(bservation) S(atellite)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014