濁度 is read as だくど (dakudo) and means turbidity.
だくど
dakudo
だくどけい
turbidity meter
にごる
to become voiced (of a consonant)
にごす
to make ambiguous
だくりゅう
muddy stream
にごり
dakuten (diacritic indicating a voiced consonant)
にごったよのなか
this corrupt world
たいど
attitude (towards an issue, etc.)
みつど
density
いど
latitude (nav.)
せつど
moderation
きど
brightness
ひんど
frequency (of occurrence)