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| pediculicidal agent (1958 H. Beckmann Drugs lxviii. 561/1 Slightly different species occupy each site, but the pediculicidal agents are equally effective against all of them. OED Alexander Demidov); louse-killer (1972 Daily Colonist (Victoria, B.C.) 15 Mar. 20/1 Kwellada lotion, a commercial pediculicidal (louse-killer). OED Alexander Demidov) | |||