Meaning: The second layer of the Earth's atmosphere, above the troposphere.

Part of speech: noun

Example: The stratosphere contains the ozone layer.

Category: Science › Atmosphere

Synonyms:

• atmosphere layer
• ozone layer

Meaning: a method of mining that removes surface layers

Part of speech: noun

Example: Strip mining can cause environmental damage.

Category: Science › Geology

Synonyms: surface mining

Meaning: the fundamental force that holds atomic nuclei together

Part of speech: noun

Example: The strong force is essential in nuclear physics.

Category: Science › Physics

Synonyms: nuclear force

Meaning: a chemical element with the symbol Sr

Part of speech: noun

Example: Strontium is used in fireworks.

Category: Science › Chemistry

Synonyms: Sr

Meaning: Relating to particles smaller than an atom.

Part of speech: adjective

Example: Subatomic particles are fundamental to physics.

Category: Science › Physics

Synonyms:

• atomic
• microscopic

Meaning: A particular kind of matter with uniform properties.

Part of speech: noun

Example: Water is a substance essential for life.

Category: Science

Synonyms:

• material
• matter

Meaning: To include or absorb something into a larger category.

Part of speech: verb

Example: The new findings will subsume previous theories.

Category: Science

Synonyms:

• include
• incorporate

Meaning: A type of sugar found in many plants.

Part of speech: noun

Example: Sucrose is commonly used as a sweetener.

Category: Science › Chemistry

Synonyms:

• table sugar
• sugar

Meaning: The act of drawing something into a space by creating a vacuum.

Part of speech: noun

Example: The suction of the vacuum cleaner was very strong.

Category: Science › Physics

Synonyms:

• vacuum
• pull

Meaning: A chemical compound containing the sulfate ion, often used in fertilizers and detergents.

Part of speech: noun

Example: The plant needs sulfate for healthy growth.

Category: Science › Chemistry

Synonyms: sulphate

Meaning: A compound consisting of sulfur and another element, often a metal.

Part of speech: noun

Example: Iron sulfide is commonly found in nature.

Category: Science › Chemistry

Meaning: A yellow chemical element used in fertilizers and various industrial processes.

Part of speech: noun

Example: Sulfur is essential for plant growth.

Category: Science › Chemistry

Synonyms: sulphur

Meaning: A strong acid used in batteries and industrial processes.

Part of speech: noun

Example: Sulfuric acid is highly corrosive and must be handled with care.

Category: Science › Chemistry

Meaning: A chemical compound containing the sulphate ion, often used in fertilizers and detergents.

Part of speech: noun

Example: The plant needs sulphate for healthy growth.

Category: Science › Chemistry

Synonyms: sulfate

Meaning: A compound consisting of sulphur and another element, often a metal.

Part of speech: noun

Example: Iron sulphide is commonly found in nature.

Category: Science › Chemistry

Meaning: A yellow chemical element used in fertilizers and various industrial processes.

Part of speech: noun

Example: Sulphur is essential for plant growth.

Category: Science › Chemistry

Synonyms: sulfur

Meaning: A chemical compound formed from sulphur and oxygen, often a pollutant.

Part of speech: noun

Example: Sulphur oxide can contribute to acid rain.

Category: Science › Chemistry

Meaning: A strong acid used in batteries and industrial processes.

Part of speech: noun

Example: Sulphuric acid is highly corrosive and must be handled with care.

Category: Science › Chemistry

Meaning: A device that tells the time by the position of the sun's shadow.

Part of speech: noun

Example: The sundial in the garden was a beautiful decoration.

Category: Science › Timekeeping

Synonyms:

• timepiece
• clock

Meaning: A dark spot on the surface of the sun caused by magnetic activity.

Part of speech: noun

Example: Scientists study sunspots to understand solar activity.

Category: Science › Astronomy

Meaning: The property of certain materials to conduct electricity without resistance at low temperatures.

Part of speech: noun

Example: Super conductivity is crucial for the development of efficient power systems.

Category: Science › Physics

Meaning: A material that exhibits super conductivity.

Part of speech: noun

Example: Copper is not a super conductor, but some ceramics are.

Category: Science › Physics

Meaning: Heated to a temperature above its boiling point.

Part of speech: adjective

Example: The super heated steam can cause burns.

Category: Science › Thermodynamics

Synonyms: overheated

Meaning: A powerful explosion of a star, resulting in a bright light.

Part of speech: noun

Example: The super nova was visible from Earth.

Category: Science › Astronomy

Synonyms: stellar explosion

Meaning: Faster than the speed of sound.

Part of speech: adjective

Example: The supersonic jet can travel across the ocean in a few hours.

Category: Science › Physics

Synonyms: hypersonic

Meaning: The elastic tendency of a fluid surface that makes it acquire the least surface area.

Part of speech: noun

Example: Surface tension allows some insects to walk on water.

Category: Science › Physics

Synonyms:

• fluid tension
• surface film

Meaning: An examination or review of something.

Part of speech: noun

Example: The survey showed that most people prefer online shopping.

Category: Science › Research

Synonyms:

• poll
• questionnaire

Meaning: A person who measures and maps land.

Part of speech: noun

Example: The surveyor marked the boundaries of the property.

Category: Science › Geography

Synonyms:

• land measurer
• mapper

Meaning: A state in which an organism's vital functions are temporarily stopped.

Part of speech: noun

Example: The patient was kept in suspended animation during the surgery.

Category: Science › Biology

Synonyms:

• temporary halt
• stasis

Meaning: An abbreviation for 'svedberg', a unit of measurement for sedimentation rate.

Part of speech: noun

Example: The sample was measured in Sv.

Category: Science › Measurement

Synonyms: svedberg

Meaning: A condition where one sense is simultaneously perceived as if by one or more additional senses.

Part of speech: noun

Example: In synaesthesia, sounds may be seen as colors.

Category: Science › Neuroscience

Meaning: The junction between two nerve cells, where impulses pass by diffusion of a neurotransmitter.

Part of speech: noun

Example: The synapse plays a crucial role in transmitting signals in the brain.

Category: Science › Neuroscience

Meaning: Existing or occurring at the same time.

Part of speech: adjective

Example: The synchronous events made it hard to keep track of everything.

Category: Science › Physics

Meaning: The combination of components or elements to form a connected whole.

Part of speech: noun

Example: The synthesis of ideas from different fields can lead to innovation.

Category: Science › Chemistry

Meaning: To combine different elements to form a coherent whole.

Part of speech: verb

Example: The researcher aims to synthesize new compounds for medicine.

Category: Science › Chemistry

Meaning: Made by chemical synthesis, especially to imitate a natural product.

Part of speech: adjective

Example: Synthetic fibers are often used in clothing.

Category: Science › Chemistry

Meaning: To convey liquid through a tube by atmospheric pressure.

Part of speech: verb

Example: He used a tube to syphon the water from the tank.

Category: Science › Fluid Dynamics

Meaning: A set of connected things or parts forming a complex whole.

Part of speech: noun

Example: The solar system consists of the sun and all the objects that orbit it.

Category: Science › Astronomy

Meaning: The point at which an object moves faster than the speed of sound.

Part of speech: noun

Example: Breaking the sound barrier was a significant achievement in aviation.

Category: Science › Physics

Synonyms:

• shock wave
• sonic barrier

Meaning: A constellation visible in the southern hemisphere, often used for navigation.

Part of speech: noun

Example: Sailors used the Southern Cross to guide their ships.

Category: Science › Astronomy

Synonyms:

• constellation
• star group