词源 |
nebulosity n.1754, "cloudiness, haziness," from French nébulosité, from Late Latin nebulositatem (nominative nebulositas), from Latin nebulosus, from nebula "mist, vapor" (from PIE root *nebh- "cloud"). From 1761 as "faint, misty appearance surrounding certain stars." updated on April 21, 2019 |