impurity

«impurity» in Mova's school dictionary: a small amount of an unwanted substance mixed into… — its meaning for a pupil, its sense in the lessons and examples, with 2 sentences of Mova's corpora that use it.

part of speech

noun (an impurity, impurities; impurity — uncountable)

meaning for a pupil

1) An impurity is a small amount of an unwanted substance mixed into something that should be pure, like dirt in water. tree →

2) Impurity is the state of not being pure. tree →

sense in the lessons

In science lessons on mixtures, separating techniques like filtering, sieving and evaporating remove impurities from water or salt. Water treatment plants remove impurities to make water safe to drink. In metals and gems, impurities can change colour or strength. Phrases: remove impurities, contain impurities, free from impurities.

examples

• We filtered the muddy water to remove the impurities. tree →
• Rock salt contains sand and other impurities. tree →
• The water company removes impurities so the water is safe to drink. tree →
• Tiny impurities give some gems their colour. tree →
• Gold with impurities is not as valuable. tree →
• The scientist tested the sample for impurities. tree →

note

Countable when it means the unwanted substances (impurities); uncountable for the quality. im- + purity. Opposite: purity. Adjective: impure. Filtering removes solid impurities, but not things dissolved in water like salt.

In the corpora

• And every thing that she lieth upon in her impurity shall be unclean; every thing also that she sitteth upon shall be unclean.
• In thee have they uncovered their fathers' nakedness; in thee have they humbled her that was unclean in her impurity.

Trees and pragmatics

Every meaning and example of «impurity» parsed by Mova, each sentence with its dependency tree and frames.