Browse Lemmas - Multilingual Dictionary Editor

acetone

A colorless, highly flammable liquid ketone used as a solvent, especially in products such as nail-polish remover, and as an industrial chemical.

Noun chemical_compound Level 1050

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albedo

The proportion of light or other radiation reflected by a surface, especially a planet, moon, or other astronomical body, expressed as a value from ze...

Noun quantitative_concept Level 1050

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alkaline

Having a pH greater than 7; basic rather than acidic.

Adjective chemical_physical Level 1050

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alpha

The first letter of the Greek alphabet (Α, α).

Noun symbolic_element Level 1050

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ammonium

A positively charged polyatomic ion, NH₄⁺, formed when ammonia accepts a proton; it occurs in many salts and behaves chemically somewhat like an alkal...

Noun chemical_compound Level 1050

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amorphous

Having no definite shape or form; lacking a regular or clearly organized structure.

Adjective shape Level 1050

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angular

Relating to, measured by, or expressed in angles.

Adjective mathematical Level 1050

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angular

Having or forming angles, especially sharp or clearly defined angles.

Adjective shape Level 1050

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anion

An ion with a negative electrical charge, formed when an atom or molecule gains one or more electrons.

Noun chemical_compound Level 1050

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asteroid

A small rocky or metallic celestial body that orbits the Sun, especially one found between the orbits of Mars and Jupiter.

Noun celestial_object Level 1050

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benzene

A colorless, highly flammable liquid aromatic hydrocarbon with the chemical formula C₆H₆, used as an industrial solvent and in manufacturing; it is to...

Noun chemical_compound Level 1050

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bicarbonate

A salt containing the bicarbonate ion (HCO₃⁻), especially sodium bicarbonate, commonly known as baking soda.

Noun chemical_compound Level 1050

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binding

The act or process of fastening, securing, or joining things together.

Noun activity Level 1050

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bonding

The joining or attachment of materials, surfaces, or components by an adhesive, heat, pressure, or another physical or chemical method.

Noun process_event Level 1050

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breakdown

A failure of a machine, vehicle, or system to operate.

Noun process_event Level 1050

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carboxylic

Relating to, containing, or characteristic of a carboxyl group (–COOH), especially in an organic compound.

Adjective chemical_physical Level 1050

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catalyst

A substance that increases the rate of a chemical reaction without being consumed or permanently changed.

Noun chemical_compound Level 1050

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catalytic

Causing or accelerating a chemical reaction without being consumed in the reaction.

Adjective chemical_physical Level 1050

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chlorophyll

A green pigment in plants, algae, and some bacteria that absorbs light energy for photosynthesis.

Noun chemical_compound Level 1050

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cluster

A group of similar things or people positioned close together.

Noun collection_things Level 1050

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composition

The way in which something is made up of separate parts, or the parts themselves considered together.

Noun collection_things Level 1050

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compound

A substance formed when two or more chemical elements combine in fixed proportions.

Noun chemical_compound Level 1050

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convection

The transfer of heat through a fluid or gas by the movement and circulation of the heated material.

Noun process_event Level 1050

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coordination

The organization of different people, activities, or parts so that they work together effectively.

Noun activity Level 1050

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cosmic

Relating to the universe or cosmos, especially outer space and the stars.

Adjective location Level 1050

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coupling

The act or process of joining two things together, especially mechanically or physically.

Noun process_event Level 1050

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covalent

Involving or characterized by the sharing of one or more pairs of electrons between atoms, forming a chemical bond.

Adjective chemical_physical Level 1050

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cyanide

A highly poisonous chemical compound containing the cyanide ion (CN−), commonly referring to hydrogen cyanide or a cyanide salt.

Noun chemical_compound Level 1050

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cycle

To move through a repeating sequence and return to the starting point.

Verb directional_movement Level 1050

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cycle

A series of events or processes that regularly repeat in the same order.

Noun process_event Level 1050

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debris

Scattered broken or discarded pieces of something, especially material left after destruction, damage, or demolition.

Noun collection_things Level 1050

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degradation

The process of becoming worse in quality, condition, or performance, or the state resulting from this process.

Noun process_event Level 1050

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dioxide

A chemical compound containing two oxygen atoms combined with one atom of another element.

Noun chemical_compound Level 1050

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displacement

The act or process of moving something from its usual or original position.

Noun process_event Level 1050

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dose

A measured amount of a medicine or other substance taken or administered at one time.

Noun medication_remedy Level 1050

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electromagnetism

The branch of physics concerned with the relationships between electricity and magnetism, including electric and magnetic fields and their interaction...

Noun knowledge_domain Level 1050

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electrostatic

Relating to electric charges that are stationary or to the forces and effects produced by them.

Adjective chemical_physical Level 1050

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elemental

Relating to or consisting of a chemical element or elements.

Adjective chemical_physical Level 1050

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elliptical

Having the shape of an ellipse; oval.

Adjective shape Level 1050

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equilibrium

A state of balance in which opposing forces or influences are equal and stable.

Noun abstract_condition Level 1050

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equinox

Either of the two times each year when the Sun crosses the celestial equator, making day and night approximately equal in length.

Noun time_period Level 1050

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ethylene

A colorless, flammable hydrocarbon gas with the chemical formula C₂H₄, used industrially to make plastics and other chemicals and naturally produced b...

Noun chemical_compound Level 1050

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exposure

The act of subjecting someone or something to a condition, influence, or experience.

Noun process_event Level 1050

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fluoride

A chemical compound containing fluorine, especially a salt of hydrofluoric acid; commonly added to toothpaste or drinking water to help prevent tooth ...

Noun chemical_compound Level 1050

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flux

Continuous change, movement, or instability; a state in which conditions are constantly shifting.

Noun abstract_condition Level 1050

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formaldehyde

A colorless, strong-smelling, highly reactive gas used in manufacturing resins, plastics, textiles, and disinfectants, and commonly encountered in dil...

Noun chemical_compound Level 1050

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fructose

A simple sugar found naturally in fruits, honey, and some vegetables; it has the same chemical formula as glucose but a different molecular structure.

Noun chemical_compound Level 1050

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galactic

Relating to or characteristic of a galaxy, especially the Milky Way.

Adjective origin Level 1050

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galaxy

A vast system of stars, gas, dust, and dark matter held together by gravity, such as the Milky Way.

Noun celestial_object Level 1050

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geothermal

Relating to or produced by the natural heat of the Earth, especially heat originating underground.

Adjective chemical_physical Level 1050

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