Definition of primary treatment in English:

primary treatment

Line breaks: pri|mary treat|ment

Entry from British & World English dictionary

noun

[mass noun]
The sedimentation and removal of most suspended matter from sewage effluent: [as modifier]: a primary treatment plant

Definition of primary treatment in:

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Word of the day humoresque
Pronunciation: ˌhjuːməˈrɛsk
noun
a short, lively piece of music