- Friedel-Crafts reaction
[free-del-krafts, -krahfts] /friˈdɛlˈkræfts, -ˈkrɑfts/ noun 1. a reaction for the synthesis of hydrocarbons and ketones by the alkylation or acylation of an aromatic compound in the presence of a catalyst, typically anhydrous aluminum chloride.
- Friedman curve
Friedman curve Fried·man curve (frēd’mən) n. A graphic representation of the hours of labor plotted against cervical dilation in centimeters.
[freed-muh n] /ˈfrid mən/ noun, Astronomy. 1. any model of the universe deduced from a homogeneous, isotropic solution of Einstein’s field equations without a cosmological constant. Such models form the mathematical basis for many modern cosmologies and provide for expansion or contraction of the universe.
[free-drik; German free-drikh] /ˈfri drɪk; German ˈfri drɪx/ noun 1. a male given name. /German ˈfriːdrɪç/ noun 1. Caspar David (ˈkaspar ˈdaːfɪt). 1774–1840, German romantic landscape painter, noted for his skill in rendering changing effects of light