Term: vasoconstrictor: any agent that causes a narrowing of an opening of a blood vessel: cold or stress or nicotine or epinephrine or norepinephrine or angiotensin or vasopressin or certain drugs; maintains or increases blood pressure
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: fatality: the quality of being able to cause death or fatal disasters
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: molecule: (physics and chemistry) the simplest structural unit of an element or compound
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: snorter: someone who expresses contempt or indignation by uttering a snorting sound
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: latch: catch for fastening a door or gate; a bar that can be lowered or slid into a groove
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: inland revenue: a board of the British government that administers and collects major direct taxes
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: neo-darwinism: a modern Darwinian theory that explains new species in terms of genetic mutations
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: insurance claim: demand for payment in accordance with an insurance policy
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: oregon grape: ornamental evergreen shrub of Pacific coast of North America having dark green pinnate leaves and racemes of yellow flowers followed by blue-black berries
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: clove oil: essential oil obtained from cloves and used to flavor medicines
Broader: agent: an active and efficient cause; capable of producing a certain effect | Unrelated: archaeopteryx: extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds