|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
paraldehyde par·al·de·hyde (pə-rāl'də-hīd')
A potent hypnotic and sedative suitable for oral, rectal, intravenous, and intramuscular administration. Also called paracetaldehyde.
colourless liquid of disagreeable taste and pungent odour used in medicine as a sedative-hypnotic drug and in chemistry in the manufacture of organic chemicals. When administered as a medicine, it is largely excreted by the lungs and gives an unpleasant odour to the breath. It is most useful for recalcitrant cases and is an older drug for treatment of acute alcoholic dementia.
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