rarefy

• 动词，指使某物的密度变小、纯度提高或结构变得更精细稀疏，常用于科学或哲学语境。

A verb meaning to make something less dense, more refined, or more subtle, often used in scientific or philosophical contexts.

1. Lessen densityC2formalscientific

   To make something less dense or solid, especially air or a gas.

   稀释

   • The machine rarefies the air inside the chamber for the experiment.
   • High altitude naturally rarefies the atmosphere.
   • The process rarefies the gas to a near-vacuum state.

   同义词attenuatediffusediluteexpandthin

   反义词compresscondensesolidifythicken

2. Make more refinedC2formal

   To make something more subtle, refined, or elevated in quality or character.

   使精致

   • Years of study rarefied his taste in art.
   • The philosopher sought to rarefy his thoughts into pure ideas.
   • Her speech was rarefied by careful choice of words.

   同义词elevateetherealizeexaltpurifyrefinesublimate

3. Weaken consistencyC2formalscientific

   To reduce the consistency or concentration of a chemical substance.

   稀释

   • The chemist rarefied the solution by adding a solvent.
   • Rarefying the mixture made it easier to analyze.
   • The substance was rarefied to a more fluid state.

   同义词attenuatecutdilutethinwater down

   反义词concentratecondensethicken