By Richard Nordquist. Definition: A rhetorical term for the repetition of words or phrases at both the beginning and end of successive clauses or verses: a combination of anaphora and epiphora (or epistrophe). See Examples and Observations, below. Also see: 1  Effective Rhetorical Strategies of Repetition. 2  Epimone. 3  Gradatio. 4  Top 20 Figures of Speech.
At any given moment, roughly 5,000 planes are in the skies above the United States. In one year, controllers handle an average of 64 million takeoffs and landings. For every one flight you see listed on an airport monitor, two you don't see show up on air traffic controllers' screens.
Quick Answer. On average, there are 93,000 daily flights originating from about 9,000 airports around the world. At any given time, there are between 8,000 and 13,000 planes in the air around the globe. Despite the large number of flights in the air on a daily basis, the number of fatal crashes has been on the decline.