Meaning: A red dye made from the crushed bodies of cochineal insects.

Part of speech: noun

Example: Cochineal is often used in food coloring.

Category: Science › Chemistry

Synonyms: dye

Meaning: A rare deep-sea fish thought to have been extinct for millions of years.

Part of speech: noun

Example: The coelacanth was discovered alive in the 20th century.

Category: Science › Zoology

Meaning: A group of small theropod dinosaurs, often characterized by their bird-like features.

Part of speech: noun

Example: The coelurosaur is believed to be closely related to modern birds.

Category: Science › Paleontology

Meaning: To stick together or be united.

Part of speech: verb

Example: The glue helps the pieces cohere.

Category: Science › Physics

Meaning: The action or fact of forming a united whole.

Part of speech: noun

Example: Cohesion among team members is essential for success.

Category: Science › Physics

Meaning: Characterized by or causing cohesion; united.

Part of speech: adjective

Example: The cohesive team worked well together.

Category: Science › Physics

Meaning: A proposed type of nuclear reaction that occurs at or near room temperature.

Part of speech: noun

Example: Cold fusion remains a controversial topic in science.

Category: Science › Physics

Synonyms: nuclear reaction

Meaning: A person who studies or collects coleoptera (beetles).

Part of speech: noun

Example: The cole-op-terist presented his findings at the conference.

Category: Science › Biology

Synonyms: entomologist

Meaning: A theoretical astronomical object that collapses under its own gravity.

Part of speech: noun

Example: The collapsar is an interesting concept in astrophysics.

Category: Science › Astronomy

Synonyms: black hole

Meaning: A machine or facility that accelerates particles for collision experiments.

Part of speech: noun

Example: The collider is used for advanced physics research.

Category: Science › Physics

Synonyms: particle accelerator

Meaning: To group or classify items together.

Part of speech: verb

Example: We need to collate and colligate the data for analysis.

Category: Science › Research

Synonyms:

• classify
• organize

Meaning: A substance used to add color to something.

Part of speech: noun

Example: Food colorant is often used in candies.

Category: Science › Chemistry

Synonyms:

• dye
• pigment

Meaning: A substance used to add color to something.

Part of speech: noun

Example: The food colourant made the cake more appealing.

Category: Science › Chemistry

Synonyms:

• dye
• pigment

Meaning: Without color; transparent or clear.

Part of speech: adjective

Example: Water is often described as colourless.

Category: Science › Chemistry

Synonyms:

• clear
• transparent

Antonyms:

• colored
• vivid

Meaning: To catch fire and burn.

Part of speech: verb

Example: The dry leaves can combust easily in the heat.

Category: Science › Chemistry

Synonyms:

• ignite
• burn

Antonyms:

• extinguish
• quench

Meaning: The process of burning something.

Part of speech: noun

Example: Combustion of fuel produces energy.

Category: Science › Chemistry

Synonyms:

• burning
• ignition

Meaning: A celestial object made of ice and dust that develops a tail when close to the sun.

Part of speech: noun

Example: Halley's Comet is visible from Earth every 76 years.

Category: Science › Astronomy

Synonyms:

• celestial body
• asteroid

Meaning: The part of a spacecraft where the crew controls the vehicle.

Part of speech: noun

Example: The astronauts returned to the command module after their spacewalk.

Category: Science › Aerospace

Synonyms: control module

Meaning: An organism that lives in close association with another, often benefiting from it.

Part of speech: noun

Example: The remora is a commensal fish that attaches to sharks.

Category: Science › Biology

Synonyms: symbiont

Meaning: A type of symbiotic relationship where one organism benefits and the other is neither helped nor harmed.

Part of speech: noun

Example: Commensalism is common in many ecosystems.

Category: Science › Biology

Synonyms: symbiosis

Meaning: An instrument for determining direction, typically using a magnetic needle.

Part of speech: noun

Example: He used a compass to navigate through the forest.

Category: Science › Navigation

Synonyms: navigational tool

Meaning: One of the directions indicated on a compass, such as north or south.

Part of speech: noun

Example: The compass point indicated they were heading east.

Category: Science › Navigation

Synonyms: direction

Meaning: A substance made of two or more elements chemically combined.

Part of speech: noun

Example: Water is a compound made of hydrogen and oxygen.

Synonyms:

• mixture
• combination

Antonyms: element

Meaning: Abbreviation for concentration or a concentrated solution.

Part of speech: noun

Example: The conc of the solution was too high for the experiment.

Category: Science › Chemistry

Meaning: A series of interconnected things or events.

Part of speech: noun

Example: The concatenation of events led to the unexpected outcome.

Category: Science › Mathematics

Synonyms: linkage

Meaning: Curved inward, like the inside of a bowl.

Part of speech: adjective

Example: The lens is concave, which helps to focus light.

Category: Science › Geometry

Synonyms: hollow

Meaning: The quality of being concave.

Part of speech: noun

Example: The concavity of the surface affects how light is refracted.

Category: Science › Geometry

Synonyms: curvature

Meaning: Having a high level of concentration or density.

Part of speech: adjective

Example: The juice is concentrated, so it needs to be diluted.

Category: Science › Chemistry

Synonyms: intense

Meaning: Having a common center, as in circles or spheres.

Part of speech: adjective

Example: The design features concentric circles.

Category: Science › Geometry

Synonyms: coaxial

Meaning: The process of a gas turning into a liquid.

Part of speech: noun

Example: Condensation on the window indicated high humidity.

Category: Science › Physics

Synonyms:

• liquefaction
• precipitation

Meaning: To make something denser or more concentrated.

Part of speech: verb

Example: You can condense the soup by simmering it.

Category: Science › Chemistry

Synonyms:

• concentrate
• compress

Meaning: The process of heat or electricity passing through a material.

Part of speech: noun

Example: Conduction is important in cooking.

Category: Science › Physics

Synonyms:

• transfer
• conductivity

Meaning: Able to conduct heat or electricity.

Part of speech: adjective

Example: Copper is a highly conductive material.

Category: Science › Physics

Synonyms:

• conducting
• transmitting

Meaning: Based on conjecture; not proven.

Part of speech: adjective

Example: The conjectural theory lacks solid evidence.

Category: Science › Philosophy of Science

Synonyms:

• speculative
• hypothetical

Antonyms:

• certain
• proven

Meaning: An opinion or conclusion formed on the basis of incomplete information.

Part of speech: noun

Example: Her conjecture about the outcome was later proven wrong.

Category: Science › Philosophy of Science

Synonyms:

• guess
• speculation

Antonyms:

• fact
• certainty

Meaning: A group of stars forming a recognizable pattern.

Part of speech: noun

Example: Orion is a well-known constellation visible in winter.

Category: Science › Astronomy

Synonyms:

• star group
• asterism

Meaning: The action of keeping something harmful under control.

Part of speech: noun

Example: Containment of the virus is crucial to prevent an outbreak.

Category: Science › Health

Synonyms:

• control
• restriction

Antonyms:

• release
• liberation

Meaning: A substance that makes something impure or harmful.

Part of speech: noun

Example: The water had a contaminant that made it unsafe to drink.

Category: Science › Environmental Science

Synonyms:

• pollutant
• impurity

Antonyms:

• purifier
• cleaner

Meaning: To make something impure or harmful by exposure to a contaminant.

Part of speech: verb

Example: The chemicals can contaminate the soil.

Category: Science › Environmental Science

Synonyms:

• pollute
• taint

Antonyms:

• purify
• clean

Meaning: The gradual movement of continents across the earth's surface.

Part of speech: noun

Example: Continental drift explains the current positions of the continents.

Category: Science › Geology

Synonyms: plate tectonics

Antonyms:

• stability
• fixed position