cloudfree

English

Etymology

From cloud +‎ -free.

Adjective

cloudfree (not comparable)

1. Lacking clouds.
   • 2016, Kevin Heng, “A Cloudiness Index for Transiting Exoplanets Based on the Sodium and Potassium Lines: Tentative Evidence for Hotter Atmospheres Being Less Cloudy at Visible Wavelengths”, in arXiv‎:

     We show that WASP-17b, WASP-31b and HAT-P-1b are nearly cloudfree at visible wavelengths.