See also: とうだ, どうた, and どうだ

Japanese edit

For pronunciation and definitions of とうた – see the following entry.
淘汰
[noun] a culling out, weeding out
[noun] (especially in biology) a selection
[verb] to cull out, weed out
Alternative spelling
洮汰
(This term, とうた, is the hiragana spelling of the above term.)