fleeting

IPA: fɫˈitɪŋ

(US, rail transport) An automatic operation mode of an absolute signal that reserves a route for several trains following one another, without the need for dispatcher to re-set the route for each train.

Examples of "fleeting" in Sentences

The beauty of a moment is that it's fleeting.
Just exuberant bliss, he supposed, an expression of fleeting pleasure, not really a binding declaration.
His rivals have criticized him for failing to convene a meeting of the panel, using that fact to highlight what they call fleeting foreign policy experience.
And I think the older we get, the more we cherish these times together, knowing how few and far between they are, and how fleeting is our time on this earth.