(n)a compound in which the hydrogen atoms of a hydrocarbon have been replaced by bromine and other halogen atoms; very stable; used in fire extinguishers although it is thought to release bromine that depletes the ozone layer
English-Thai: HOPE Dictionary [with local updates]Hope Dictionary
‖n. pl. [ NL., fr. Gr. "a`lwn, "a`lwnos, a halo. ] (Biol.) Alternating transparent and opaque white rings which are seen outside the blastoderm, on the surface of the developing egg of the hen and other birds. [ 1913 Webster ]