(biochemistry) The urea cycle.

(biochemistry) The Krebs cycle.

plural of cystic duct

(anatomy) A short duct that leads from the gallbladder and unites with the common hepatic duct to form the common bile duct.

Microbiota decussata, an evergreen coniferous shrub.

(chemistry) A thermochemical cycle, used to produce hydrogen, consisting of three chemical reactions whose net reactant is water and whose net products are hydrogen and oxygen.

An ovarian cyst containing old brown blood, usually, but not always, associated with endometriosis.

A furnace for roasting ore.

(chemistry) The conversion of one enantiomer of a chemical compound into the other enantiomer and back again.

A pair of cymbals that can be closed or opened by means of a mechanism, such as a pedal mechanism.