Synonyms to visibility zero

aerospace, CAT, aerial, aerophysical, aerosphere, aerotechnical, air hole, air pocket, air-conscious, air-minded, air-wise, airsick, airspace, airworthy, aviational, bump, ceiling, crosswind, empty space, favorable wind, fog, front, head wind, high-pressure area, hole, ionosphere, jetstream, low-pressure area, overcast, pocket, roughness, soup, space, stratosphere, substratosphere, tail wind, tropopause, troposphere, trough, turbulence, visibility, atmosphere, biosphere, ecosphere, gaseous envelope, lift, noosphere, welkin, air duct, air passage, air shaft, air tube, airway, armhole, blowhole, breathing hole, bullet-hole, bunghole, cringle, deadeye, em