The AI-powered English dictionary
not comparable
Being four times as long, as big or as many of something. examples
third-person singular simple present quadruples, present participle quadrupling, simple past and past participle quadrupled
(transitive) To multiply by four. examples
(intransitive) To increase by a factor of four. examples
(rail transport) To provide four parallel running lines on a given stretch of railway. quotations examples
On June 8, 1872, the London & North Western Railway obtained powers to quadruple its main line, and a new tunnel was bored for the up and down slow lines.
1950 September, “Network News: Watford Tunnel, L.M.R.”, in Railway Magazine, page 641
Quadrupling the short remaining stretch of three-track railway north of Rugby, left over by the turn of the century modernisation, is a possibility that could be pursued.
2019 October, “Railtalk: HS2 delay - time for lateral thinking”, in Modern Railways, page 7
A long-term aspiration is to quadruple the cross-country route between Peterborough and Werrington Junction, removing any conflict between trains on the Spalding and Leicester lines.
2020 April 22, Paul Shannon, “Felixstowe: Is 47 trains a day achievable?”, in Rail, page 52
plural quadruples
Something that is four times the usual number, amount, size, etc. examples
(skating) A figure-skating jump with four revolutions in the air. examples