T
Part of speech: noun
Definition: The twentieth letter of the English alphabet.
Example sentence: As our knees and hips and eyesight deteriorate, we become more dependable, less impulsive, kinder, and less moody. Psychologists call this the maturity principle. My own life experience fits this principle to a T.
Thyroxine
Part of speech: noun
Definition: A hormone (an iodine derivative of tyrosine), produced by the thyroid gland, that regulates cell metabolism and growth.