The vortex hypothesis suggested an explanation of the widening of many spot lines, and the doubling or trebling of some of them.
Among the ways and means adopted was the trebling of all the assessed taxes.
How does doubling or trebling the speed of an object affect its kinetic energy?
In such a case, several traps may be set in the trail, thus doubling or trebling the chance for a catch.
Weight given: it is only by doubling or trebling his velocity that a man can make his momentum double or treble, as needed!
He was an old hand at the work, and doubling and trebling did not in the slightest disturb him.
It means doubling and trebling their ammunition supply, too.
Already the Communal allotment is too small for our wants, and the land outside is doubling and trebling in price!
Dubourg suggested doubling, then trebling, the stakes; the rich squire agreed, for he could not refuse monsieur le baron.
His capital grew by leaps and bounds, doubling, trebling, and finally quadrupling the sum he had handed the banker.
late 14c., "three times, triple," from Old French treble (12c.), from Latin triplus (see triple).
early 14c., "to multiply by three," from Old French trebler, from treble (see treble (adj.)). Related: Trebled; trebling.
"highest part in music, soprano," mid-14c., from Anglo-French treble, Old French treble (see treble (adj.)). In early contrapuntal music, the chief melody was in the tenor, and the treble was the "third" part above it (after the alto).