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Pronunciation varies by accent · noun
(meteorology) A colorful optical phenomenon seen in iridescent clouds and on the borders of lenticular clouds resembling those seen in soap bubbles and oil on a water surface..
Use irisation when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Irisation means (meteorology) A colorful optical phenomenon seen in iridescent clouds and on the borders of lenticular clouds resembling those seen in soap bubbles and oil on a water surface..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use irisation where its definition matches the intended context.
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