【医】 axenic
naught; nonexistence; not; nothing; without; lack; zero
【医】 a-; leipo-; lipo-; non-
ab extra
pollute; contaminate; empoison; stain; taint; vitiate
【计】 fouling
【化】 contaminate; contamination; pollute; pollution
【医】 contaminate; contamination; inquination; pollution
【经】 contamination