perlucidus

perlucidus

[pər′lü·səd·əs]
(meteorology)
A cloud variety, usually of the species stratiformis, in which distinct spaces between its elements permit the sun, moon, blue sky, or higher clouds to be seen.
References in periodicals archive ?
In the classical Latin, the transparent adjective was translated with translucidus, perlucidus, perlucens, liquidus, splendidus, all these adjectives are often referred to water and air and they mean limpid or clear.
COINCIDENT SUN PILLAR AND PERLUCIDUS CLOUD OPTICS UNDER THE MIDNIGHT SUN, ANCHORAGE, AK.