Hüperonüümid:
pilv 1(n)
pärlmutterpilv 1(n)

jääkristallidest koosnev õhuke läbipaistev värviline pilv stratosfääris

PWN-3.0 relation(s)

eq_synonym
mother-of-pearl cloud 1(n), nacreous cloud 1(n) a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon

CILI relation(s)

eq_synonym
mother-of-pearl_cloud 1(n), nacreous_cloud 1(n) a luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon