Meanings (ES + gloss)
enrarecer • rarear • rarefacer (disused) • rarificar
To make rare, thin, porous, or less dense.
By means of this gauge, Mr. Smeaton judged that his machine was incomparably better than any former one, as it seemed to rarefy the air in the receiver 1000, or even 2000 times, wh…
Phrases
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