diluted

Concise Oxford English Dictionary © 2008 Oxford University Press:
dilute /dʌɪˈl(j)uːt, dɪ-/

▶verb

• 1 make (a liquid) thinner or weaker by adding water or another solvent.

• 2 make weaker or less effective by modifications or additions.

▶adjective also /ˈdʌɪ-/ (of a liquid) diluted.

■ Chemistry (of a solution) having a relatively low concentration of solute.

– derivatives
diluter noun,
dilution noun,
dilutive adjective.

– origin C16: from L. dilut-, diluere ‘wash away, dissolve’.