Usage Note
Diluir is an irregular verb of the -uir group; it inserts a y in stressed stems: diluyo, diluyes, diluye, etc. It is used literally (diluting a solution) and figuratively (diluir responsabilidades — to water down responsibilities). The reflexive diluirse means to become diluted or to fade away gradually.
Examples
"Hay que diluir el concentrado en agua."
Natural Translation
You need to dilute the concentrate in water.

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