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Henderson, Richard, Scottish molecular biologist

(Encyclopedia)Henderson, Richard, 1945–, Scottish molecular biologist, Ph.D. Cambridge, 1969. Henderson has been a researcher at the Laboratory of Molecular Biology in Cambridge since 1973. In 2017 he was awarded...

pectin

(Encyclopedia)pectin, any of a group of white, amorphous, complex carbohydrates that occur in ripe fruits and certain vegetables. Fruits rich in pectin are the peach, apple, currant, and plum. Protopectin, present ...

pressure-treated wood

(Encyclopedia)pressure-treated wood, wood that has had a liquid preservative forced into it in order to protect against deterioration due to rot or insect attack. The most commonly used preservatives are chromated ...

niello

(Encyclopedia)niello nēĕlˈō [key] [Ital. from Latin nigellus=blackish], black metallic alloy of sulfur, copper, silver, and usually lead, used as an inlay on engraved metal. The metal surface is brushed with a ...

Nonpartisan League

(Encyclopedia)Nonpartisan League, in U.S. history, political pressure group of farmers and workers organized in 1915 and led by a former socialist, Arthur C. Townley, who believed that the solution to the farmers' ...

Orlando, Vittorio Emanuele

(Encyclopedia)Orlando, Vittorio Emanuele vēt-tôˈrēō āmänwĕˈlā ōrlänˈdō [key], 1860–1952, Italian statesman and jurist. He held several cabinet posts from 1903 to 1917 and was premier from 1917 to 19...

solvent

(Encyclopedia)solvent, constituent of a solution that acts as a dissolving agent. In solutions of solids or gases in a liquid, the liquid is the solvent. In all other solutions (i.e., liquids in liquids or solids i...

Tartaglia, Niccolò

(Encyclopedia)Tartaglia, Niccolò nēk-kōlôˈ tärtäˈlyä [key], c.1500–1557, Italian engineer and mathematician. Largely self-educated, he taught mathematics at Verona, Brescia, and Venice. A pioneer in appl...

squinch

(Encyclopedia)CE5 Squinch squinch, in architecture, a piece of construction used for filling in the upper angles of a square room so as to form a proper base to receive an octagonal or spherical dome. It was th...

colloid

(Encyclopedia)colloid kŏlˈoid [key] [Gr.,=gluelike], a mixture in which one substance is divided into minute particles (called colloidal particles) and dispersed throughout a second substance. The mixture is also...