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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.]
(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)]