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thymic (2)
thymidine
thymine
thymocyte
thymol
thymoma
thymosin
thymus
thyratron
thyristor
thyro-
thyrocalcitonin
thyroglobulin
thyroid
thyroid cartilage
thyroid gland
thyroid hormone
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thyratron

thy·ra·tron [ thrə tròn ] (plural thy·ra·trons)


noun 
Definition:
 
electronic tube: a gas-filled hot-cathode tube that acts as an electronic switch or relay in which a signal applied to the control grid initiates anode current but does not limit it

[Early 20th century. < Greek thura "door"]
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