orange-blossom orchid: diminutive Australian orchid with loose racemes of fragrant white flowers with purple and orange markings on the lip
orchid: any of numerous plants of the orchid family usually having flowers of unusual shapes and beautiful colors
polyunsaturated fatty acid: an unsaturated fatty acid whose carbon chain has more than one double or triple valence bond per molecule; found chiefly in fish and corn and soybean oil and safflower oil