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Pronunciation varies by accent · noun
(historical) A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography..
Use heliotypy when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Heliotypy means (historical) A method of transferring pictures from photographic negatives to hardened gelatin plates from which impressions are produced on paper as by lithography..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use heliotypy where its definition matches the intended context.
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