monthlong

Adjective

monthlong (not comparable)

1. Which lasts a month, or approximately so.
   • In early December, as rainwaters had started the monthlong process of flooding mines and washing out rail lines, workers lined up before 1 p.m. at an easy-to-miss storefront depot in Mackay.2011 January 12, Joel Kirkland, “Australia's Record Rains Squeeze World Coal Supplies as Scientists Study Climate Pattern”, in The New York Times, archived from the original on 15 Sep 2025
   • The 1.2-meter-diameter (4-foot-diameter) telescope has set off on a monthlong journey to its orbital destination of the sun-Earth Lagrange point L2, which is nearly 1 million miles (1.6 million kilometers) away from Earth and also home to NASA’s James Webb Space Telescope. Euclid will keep pace...2021 December 24, Don Lincoln, “The telescope that will replace Hubble will launch on Christmas. Here’s why it matters”, in CNN