In all living organisms, Coenzyme A is synthesized in a five-step process that requires four molecules of ATP, from pantothenate and cysteine: 1  Pantothenate (vitamin B5) is phosphorylated to 4'-phosphopantothenate by the enzyme pantothenate kinase (PanK; CoaA; CoaX)
Origin: From TARDIS, the time machine in British science-fiction TV programme Doctor Who. Freebase(0.00 / 0 votes)Rate this definition: The TARDIS is a time machine and spacecraft in the British science fiction television programme Doctor Who and its associated spin-offs. A TARDIS is a product of the advanced technology of the Time Lords, an extraterrestrial civilisation to which the programme's central character, the Doctor, belongs.
tarmac. n. 1. (Civil Engineering) a paving material that consists of crushed stone rolled and bound with a mixture of tar and bitumen, esp as formerly used for a road, airport runway, etc. Full name: tarmacadam See also macadam. 2. (Aeronautics) the tarmac a runway at an airport: on the tarmac at Nairobi airport.arÂ·mac. n. A tarmacadam road or surface, especially an airport runway. v. tarÂ·macked, tarÂ·mackÂ·ing, tarÂ·macs. v. tr. To cause (an aircraft) to sit on a taxiway. v. intr.