Informal. 1. . Idioms 2. on the q.t., stealthily; secretly: to meet someone on the q.t. abbreviation (informal) 1. quiet 2. on the q.t., secretly n. slang for “quiet,” in phrase on the q.t., attested from 1874. Phrase on the quiet appears from 1847. quiet Latin qui tam (who sues) see: on the Q.T.
- Q-t interval
Q-T interval n. The time elapsing from the beginning of the QRS complex to the end of the T wave in an electrocardiogram, representing the total duration of electrical activity of the ventricles.
- Q-tip trust
qualified terminal interest property trust