Acute medicines for migraine are medications taken when an attack occurs to treat the symptoms. Learn more Acute medicines for migraine are medications taken when an attack occurs to treat the symptoms.
In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons. The metals are one of the three groups of elements as distinguished by their ionization and bonding properties, along with the metalloids and nonmetals. On the periodic table, a diagonal line drawn from boron (B) to polonium (Po) separates the metals from the nonmetals.
science noun [C/U]. âº the âsystematic âstudy of the âstructure and âbehavior of the ânatural and âphysical âworld, or âknowledge âobtained about the âworld by âwatching it âcarefully and experimenting: [U] Advances in âmedical science âmean that âpeople are âliving âlonger. [U] She âshows a âtalent for âmath and science.