Meaning: a chemical element used in batteries and pigments

Part of speech: noun

Example: Cadmium is toxic in large amounts.

Category: Science › Chemistry

Synonyms: Cd

Meaning: a chemical element used in atomic clocks

Part of speech: noun

Example: Caesium is essential for precise timekeeping.

Category: Science › Chemistry

Meaning: Containing calcium or calcium compounds.

Part of speech: adjective

Example: The calciferous rock is rich in minerals.

Category: Science › Geology

Synonyms:

• calcium-rich
• mineralized

Meaning: Hardened by calcium deposits.

Part of speech: adjective

Example: The calcified tissue was no longer flexible.

Category: Science › Biology

Synonyms:

• hardened
• stiffened

Meaning: To become hardened or to turn into calcium.

Part of speech: verb

Example: The tissue may calcify over time.

Category: Science › Biology

Synonyms:

• harden
• solidify

Meaning: A common mineral made of calcium carbonate.

Part of speech: noun

Example: Calcite is often found in limestone.

Category: Science › Geology

Synonyms:

• mineral
• carbonate

Meaning: A chemical element important for bones and teeth.

Part of speech: noun

Example: Milk is a good source of calcium.

Category: Science › Chemistry

Synonyms:

• mineral
• element

Meaning: A chemical compound found in rocks and shells.

Part of speech: noun

Example: Calcium carbonate is used in antacids.

Category: Science › Chemistry

Synonyms:

• chalk
• limestone

Meaning: A large volcanic crater formed by an eruption.

Part of speech: noun

Example: The caldera was filled with water, creating a lake.

Category: Science › Geology

Synonyms:

• crater
• volcano

Meaning: A radioactive chemical element used in nuclear reactors.

Part of speech: noun

Example: Californium is used in neutron sources.

Category: Science › Chemistry

Synonyms:

• element
• radioactive material

Meaning: Referring to something that has a low or no calorie content.

Part of speech: adjective

Example: She prefers a low-calorie diet.

Category: Science › Nutrition

Synonyms: low-calorie

Meaning: A unit of energy that is used to measure the energy content of food.

Part of speech: noun

Example: An apple has about 95 calories.

Synonyms: energy unit

Meaning: Relating to the energy-producing capacity of food.

Part of speech: adjective

Example: Calorific value is important for diet planning.

Category: Science › Nutrition

Synonyms: energy-producing

Meaning: An instrument used to measure the amount of heat involved in a chemical reaction or other processes.

Part of speech: noun

Example: The calorimeter helped determine the energy content of the food.

Category: Science › Physics

Synonyms: heat meter

Meaning: The outer part of a flower, consisting of sepals.

Part of speech: noun

Example: The calyx protects the flower bud before it blooms.

Category: Science › Botany

Synonyms: flower cup

Meaning: Relating to the first geological period of the Paleozoic era, known for the emergence of many life forms.

Part of speech: adjective

Example: The Cambrian period saw a rapid increase in biodiversity.

Category: Science › Geology

Synonyms: Paleozoic

Meaning: An optical device that projects an image of its surroundings onto a screen.

Part of speech: noun

Example: The artist used a camera obscura to help with perspective.

Category: Science › Optics

Synonyms: dark chamber

Meaning: A unit of luminous intensity in a given direction.

Part of speech: noun

Example: The brightness of the light is measured in candelas.

Category: Science › Physics

Synonyms: luminous intensity unit

Meaning: The ability of a system to store an electric charge.

Part of speech: noun

Example: The capacitance of the capacitor is measured in farads.

Category: Science › Physics

Synonyms: storage capacity

Meaning: A small container, often used for medicine or space travel.

Part of speech: noun

Example: The astronaut entered the capsule before the launch.

Category: Science

Synonyms:

• container
• vessel

Meaning: A unit of weight for gemstones, equal to 200 milligrams.

Part of speech: noun

Example: This diamond is two carats.

Category: Science › Gemology

Synonyms: weight unit

Meaning: A colorless, toxic compound used as a disinfectant.

Part of speech: noun

Example: Carbolic acid was once commonly used in surgery.

Category: Science › Chemistry

Synonyms: phenol

Meaning: A chemical element that is the basis for all life on Earth.

Part of speech: noun

Example: Carbon is found in all organic compounds.

Category: Science › Chemistry

Synonyms:

• C
• element

Meaning: The process by which carbon is exchanged among the atmosphere, land, and oceans.

Part of speech: noun

Example: The carbon cycle is crucial for maintaining Earth's climate.

Category: Science › Environmental Science

Synonyms: carbon exchange

Meaning: A method for determining the age of an object containing organic material by measuring the amount of carbon-14 it contains.

Part of speech: noun

Example: Carbon dating revealed that the artifact was over 2,000 years old.

Category: Science › Archaeology

Synonyms: radiocarbon dating

Meaning: A colorless gas produced by burning carbon and organic compounds and by respiration.

Part of speech: noun

Example: Plants absorb carbon dioxide during photosynthesis.

Category: Science › Chemistry

Synonyms: CO2

Meaning: A colorless, odorless gas that is toxic to humans and animals.

Part of speech: noun

Example: Carbon monoxide can be produced by incomplete combustion.

Category: Science › Chemistry

Synonyms: CO

Meaning: To treat or combine with carbon dioxide.

Part of speech: verb

Example: You can carbonate water to make it fizzy.

Category: Science › Chemistry

Synonyms:

• fizz
• sparkle

Meaning: A weak acid formed when carbon dioxide is dissolved in water.

Part of speech: noun

Example: Carbonic acid is found in carbonated beverages.

Category: Science › Chemistry

Meaning: Relating to a geological period when coal deposits were formed.

Part of speech: adjective

Example: The carboniferous period is known for its vast forests.

Category: Science › Geology

Meaning: To convert into carbon or a carbon-containing residue.

Part of speech: verb

Example: The wood will carbonize if exposed to high heat.

Category: Science › Chemistry

Synonyms: char

Meaning: A large container used for storing liquids, typically made of glass or plastic.

Part of speech: noun

Example: The laboratory used a carboy to store the chemicals.

Category: Science › Chemistry

Synonyms: jug

Meaning: To introduce carbon into a material, usually steel, to harden it.

Part of speech: verb

Example: They decided to carburize the steel for increased strength.

Category: Science › Metallurgy

Meaning: A large carnivorous dinosaur.

Part of speech: noun

Example: The T. rex is one of the most famous carnosaur species.

Category: Science › Paleontology

Synonyms:

• dinosaur
• predator

Meaning: A pigment found in plants that gives them a yellow or orange color.

Part of speech: noun

Example: Carotene is important for healthy vision.

Category: Science › Biochemistry

Synonyms:

• pigment
• nutrient

Meaning: A person who creates maps.

Part of speech: noun

Example: The cartographer spent years studying geography.

Category: Science › Geography

Synonyms:

• mapmaker
• geographer

Meaning: The art and science of making maps.

Part of speech: noun

Example: Cartography has evolved with technology.

Category: Science › Geography

Synonyms:

• map-making
• geography

Meaning: A type of plant from which castor oil is derived.

Part of speech: noun

Example: The castor plant is known for its large leaves.

Category: Science › Botany

Synonyms: Ricinus communis

Meaning: The metabolic process of breaking down molecules to obtain energy.

Part of speech: noun

Example: Catabolism is essential for energy production in the body.

Category: Science › Biochemistry

Synonyms: metabolism

Antonyms: anabolism

Meaning: To cause or accelerate a chemical reaction.

Part of speech: verb

Example: Enzymes catalyse reactions in the body.

Category: Science › Chemistry

Synonyms:

• accelerate
• facilitate