Browse Lemmas - Multilingual Dictionary Editor

redshift

A shift in the spectrum of light or other electromagnetic radiation toward longer, redder wavelengths, indicating that the source is moving away from ...

Noun process_event Level 1050

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refractive

Relating to or involving the bending of light, sound, or other waves as they pass from one medium into another.

Adjective physical_property Level 1050

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refractive

Relating specifically to the refraction of light by the eye or to the optical power of the eye and its corrective lenses.

Adjective biological_type Level 1050

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relative

A person connected to another by family relationship.

Noun family_relation Level 1050

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resonance

The condition in which a system vibrates with greatly increased amplitude when driven at a particular frequency.

Noun process_event Level 1050

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runoff

Water that flows over the ground or other surfaces, especially after rain or snowmelt, often carrying soil or pollutants into rivers and lakes.

Noun natural_feature Level 1050

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seawater

Salt water from the sea or ocean.

Noun material_substance Level 1050

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shale

A soft, finely layered sedimentary rock formed from compacted clay, mud, or silt.

Noun material_substance Level 1050

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silica

A hard mineral compound consisting of silicon and oxygen, commonly found in sand, quartz, and many rocks; silicon dioxide.

Noun chemical_compound Level 1050

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silicate

A salt or ester containing silicon, oxygen, and usually one or more metals, based on the silicate anion or its structural units; silicates make up man...

Noun chemical_compound Level 1050

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solar

Relating to or produced by the sun.

Adjective origin Level 1050

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spectral

Relating to or produced by a spectrum, especially the range of frequencies or wavelengths in electromagnetic radiation.

Adjective chemical_physical Level 1050

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spectroscopy

The scientific study and measurement of how matter interacts with electromagnetic radiation, especially by analyzing the wavelengths or frequencies ab...

Noun knowledge_domain Level 1050

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spectrum

A band of colors or other visible wavelengths produced when light is separated according to wavelength.

Noun natural_feature Level 1050

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spin

To turn or cause to turn rapidly around a central point or axis.

Verb directional_movement Level 1050

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stiffness

Painful or restricted movement in a joint, muscle, or part of the body.

Noun disease_condition Level 1050

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sulfate

A salt or ester of sulfuric acid, containing the sulfate ion SO₄²⁻.

Noun chemical_compound Level 1050

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sulfide

A chemical compound in which sulfur is combined with a less electronegative element, especially a compound containing the sulfide ion S²⁻.

Noun chemical_compound Level 1050

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sulfuric

Relating to, containing, or derived from sulfur, especially in its higher oxidation state; specifically denoting sulfuric acid or its salts and esters...

Adjective chemical_physical Level 1050

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supernova

A powerful stellar explosion in which a star suddenly becomes vastly brighter and then gradually fades, often leaving behind a neutron star or black h...

Noun natural_feature Level 1050

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supernova

A star that undergoes a supernova explosion, especially when referring to it as a transient astronomical object.

Noun celestial_object Level 1050

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testosterone

A male sex hormone produced mainly in the testes, and in smaller amounts by the ovaries and adrenal glands, that supports the development of male repr...

Noun chemical_compound Level 1050

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ton

A unit of weight equal to 2,000 pounds (907.2 kilograms) in the United States and Canada.

Noun unit_of_measurement Level 1050

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urea

A nitrogen-containing chemical compound, CO(NH₂)₂, produced in the liver from the breakdown of proteins and excreted in urine; it is also manufactured...

Noun chemical_compound Level 1050

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vortex

A mass of air, water, or another fluid that spins rapidly around a central point, often forming a whirling column or spiral.

Noun natural_feature Level 1050

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weathering

The gradual breakdown, alteration, or disintegration of rock and other materials at or near Earth’s surface through exposure to weather, water, chemic...

Noun process_event Level 1050

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