The kanji 汰汰 primarily conveys the meaning of "to wash," "to refine," "to eliminate," or "to select." It suggests a process of removing impurities or making something pure. It implies a process of cleaning, sorting, or choosing something based on quality or suitability.

・On-yomi (音読み): ・タ (ta) ・Kun-yomi (訓読み): ・あら（う） (arau) - to wash, to rinse

⚫︎淘汰（とうた） Translation: elimination, selection, to weed out ⚫︎選汰（せんだ） Translation: selection ⚫︎淘汰する（とうたする） Translation: to eliminate, to weed out

The kanji 汰汰 is a phono-semantic compound (形声文字). The left side is the water radical (氵or 㳄), which provides the semantic component, indicating that it has to do with liquids or water-related actions. The right side is 太 (tai), which provides the phonetic component, suggesting the sound of the kanji. Therefore, the formation of the kanji 汰汰 means to wash with water. The character originated from the combination of these two components over time.