-jə(r) noun
( -s )
: an instrument for collecting samples of dust or other suspended particles especially in air by impinging a stream of the suspension on a surface or in a liquid (as water)
-jə(r) noun
( -s )
: an instrument for collecting samples of dust or other suspended particles especially in air by impinging a stream of the suspension on a surface or in a liquid (as water)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012