montelukast

noun
mon·​te·​lu·​kast | \ ˌmänt-ə-ˈlü-ˌkast How to pronounce montelukast (audio) \

Medical Definition of montelukast

: a leukotriene antagonist used orally in the form of its sodium salt C35H35ClNNaO3S to treat asthma or to relieve the symptoms of seasonal allergic rhinitis — see singulair