quaternary ammonium compound

Now the lead breacher explained how he cut through the steel doors bin Laden used to seal himself into the compound at night.

He, with others, thinking the miss-sahib had gone to church, was smoking the hookah of gossip in a neighboring compound.

They held the compound against repeated assaults, and lost several men in hand-to-hand fighting.

Passing a bungalow that was blazing furiously, he saw in the compound the corpses of two women.

The sediment usually contains abundant amorphous phosphates and crystals of triple phosphate and ammonium urate.

The body of a young woman was found in the compound outside my bungalow, done to death in precisely the same way.