(1834â1908), Dutch ophthalmologist. Snellen was director of an eye clinic at Utrecht. In 1862 he introduced a test for measuring the acuteness of vision which consisted of printed letters or words in type of various sizes.
Brief Summary. Papaver somniferum, opium poppy, is an annual herbaceous plant in the Papaveraceae (poppy family) that originated in southeastern Europe and western Asia, and are now widely cultivated in Europe, Asia, China, and North Africa for their seeds, which are used in baking, as a condiment, and for their edible oil.
1 See corn poppy, Iceland poppy, opium poppy. 2  any of several similar or related plants, such as the California poppy, prickly poppy, horned poppy, and Welsh poppy. ( 3 obsolete) any of the drugs, such as opium, that are obtained from these plants. 4  a strong red to reddish-orange colour. any of numerous papaveraceous plants of the temperate genus Papaver, having red, orange, or white flowers and a milky sap. 2  See corn poppy, Iceland poppy, opium poppy.