"ˌ noun
Etymology: bi- (II) + film (I)
: a thin usually resistant layer of microorganisms (as bacteria) that form on and coat various surfaces (as of water pipes and catheters)
"ˌ noun
Etymology: bi- (II) + film (I)
: a thin usually resistant layer of microorganisms (as bacteria) that form on and coat various surfaces (as of water pipes and catheters)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012