List of Words for Letter ‘N’

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nebula A huge cloud of gas and dust in space that is the first stage of star formation.
nekton Organisms that swim through the water in aquatic ecosystems.
nervous system The set of organs that uses information from the senses to control other body systems.
neutralization The chemical change of an acid and a base into a salt and water. A particle in the nucleus of an atom that has no electric charge.
neutron A particle in the nucleus of an atom that has no electric charge.
niche The role of an organism in an ecosystem.
nitrogen cycle The continuous trapping of nitrogen gas into compounds in the soil and its return to the air.
nonrenewable resource A resource that cannot be replaced within a short period of time or at all.
nonvascular Containing no plant tissue through which water and food move.
nucleus The center of an atom that has most of its mass.
nymph A stage of metamorphosis where the organism is similar to an adult form, but is smaller.