Meaning: A rate of inclination; a slope.

Part of speech: noun

Example: The gradient of the hill made it difficult to climb.

Synonyms:

• slope
• incline

Antonyms: flatness

Meaning: A metric unit of mass equal to one thousandth of a kilogram.

Part of speech: noun

Example: The recipe calls for 200 grams of flour.

Category: Science › Measurement

Synonyms: unit of mass

Meaning: A variant spelling of 'gram', a metric unit of mass.

Part of speech: noun

Example: The package weighed 500 grammes.

Category: Science › Measurement

Synonyms: gram

Meaning: Consisting of small grains or particles.

Part of speech: adjective

Example: The granular texture of the sand was noticeable.

Category: Science › Materials

Synonyms:

• grainy
• textured

Meaning: A small particle or grain.

Part of speech: noun

Example: A granule of salt fell on the table.

Category: Science

Synonyms:

• particle
• grain

Meaning: A diagram representing a system of connections or relationships.

Part of speech: noun

Example: The graph shows the sales trends over the year.

Category: Science › Mathematics

Synonyms:

• chart
• diagram

Meaning: A form of carbon used in pencils and lubricants.

Part of speech: noun

Example: The pencil contains graphite for writing.

Category: Science › Materials

Synonyms: carbon

Meaning: To be attracted to something.

Part of speech: verb

Example: Children tend to gravitate towards bright colors.

Category: Science › Physics

Synonyms:

• attract
• draw

Meaning: The force that attracts objects towards each other.

Part of speech: noun

Example: Gravity is a form of gravitation.

Category: Science › Physics

Synonyms:

• attraction
• pull

Meaning: The force that pulls objects toward the Earth.

Part of speech: noun

Example: Gravity keeps us grounded.

Category: Science › Physics

Synonyms:

• weight
• heaviness

Meaning: A thick oily substance used for lubrication.

Part of speech: noun

Example: He applied grease to the machine.

Category: Science › Chemistry

Synonyms:

• oil
• lubricant

Meaning: A period of agricultural transformation that increased food production.

Part of speech: noun

Example: The Green Revolution helped reduce hunger.

Category: Science › Agriculture

Synonyms: agricultural revolution

Meaning: The warming of the Earth's surface due to trapped gases.

Part of speech: noun

Example: The greenhouse effect is a major environmental concern.

Category: Science › Environmental Science

Synonyms: global warming

Meaning: Gases that trap heat in the atmosphere.

Part of speech: noun

Example: Carbon dioxide is a greenhouse gas.

Category: Science › Environmental Science

Synonyms: GHG

Meaning: The mean solar time at the Royal Observatory in Greenwich, London.

Part of speech: noun

Example: The train schedule is based on Greenwich Mean Time.

Category: Science › Time

Synonyms: GMT

Meaning: Innovative; introducing new ideas or methods.

Part of speech: adjective

Example: The groundbreaking research changed the field of medicine.

Category: Science › Research

Synonyms:

• innovative
• revolutionary

Antonyms:

• traditional
• conventional

Meaning: Water that is found underground in soil or rock.

Part of speech: noun

Example: Groundwater is an essential resource for drinking water.

Category: Science › Hydrology

Meaning: A thick, sticky substance, often unpleasant.

Part of speech: noun

Example: The old machine was covered in gunge.

Category: Science › Substances

Synonyms: slime

Meaning: A thick, sticky substance, often dirty or unpleasant.

Part of speech: noun

Example: There was gunk all over the floor after the party.

Category: Science › Substances

Synonyms: mess

Meaning: A soft mineral used in plaster and fertilizer.

Part of speech: noun

Example: Gypsum is often used to improve soil quality.

Category: Science › Mineralogy

Synonyms:

• calcium sulfate
• plaster

Meaning: Horsepower, often abbreviated as hp.

Part of speech: noun

Example: The motorcycle's engine is rated at 50 h p.

Category: Science › Physics

Meaning: suitable for living in

Part of speech: adjective

Example: The planet is habitable for humans.

Category: Science › Astronomy

Synonyms:

• livable
• inhabitable

Antonyms:

• uninhabitable
• desolate

Meaning: a mineral form of iron oxide

Part of speech: noun

Example: Haematite is often used in jewelry.

Category: Science › Geology

Synonyms:

• iron ore
• mineral

Meaning: a chemical element with the symbol Hf

Part of speech: noun

Example: Hafnium is used in nuclear reactors.

Category: Science › Chemistry

Synonyms:

• element
• metal

Meaning: The time required for half of a substance to decay or be eliminated.

Part of speech: noun

Example: The half-life of this radioactive material is ten years.

Category: Science › Physics

Synonyms: decay time

Meaning: A hydrogen bomb, a type of nuclear weapon.

Part of speech: noun

Example: The H-bomb is more powerful than an atomic bomb.

Category: Science › Nuclear Physics

Synonyms:

• hydrogen bomb
• nuclear weapon

Meaning: The quality of being hot; a form of energy.

Part of speech: noun

Example: The heat from the sun warmed the earth.

Category: Science › Physics

Meaning: Any natural object in space, such as a star or planet.

Part of speech: noun

Example: The moon is a heavenly body visible at night.

Category: Science › Astronomy

Synonyms: celestial body

Meaning: A unit of area equal to 10,000 square meters.

Part of speech: noun

Example: The farm covers 50 hectares.

Category: Science › Measurement

Synonyms: acre

Meaning: The measurement of how tall something is.

Part of speech: noun

Example: The height of the building is 100 meters.

Category: Science › Measurement

Synonyms:

• altitude
• elevation

Antonyms: depth

Meaning: A chemical element that is a colorless, odorless gas used in balloons.

Part of speech: noun

Example: The balloon was filled with helium.

Category: Science › Chemistry

Synonyms: noble gas

Meaning: A three-dimensional spiral shape.

Part of speech: noun

Example: The DNA helix is a fundamental structure in biology.

Category: Science › Biology

Synonyms: spiral

Meaning: half of a sphere, often used to refer to half of the Earth

Part of speech: noun

Example: The Northern Hemisphere experiences winter when the Southern Hemisphere has summer.

Category: Science › Geography

Synonyms:

• half
• section

Meaning: a chemical used to kill unwanted plants

Part of speech: noun

Example: Farmers often use herbicide to control weeds.

Category: Science › Agriculture

Synonyms: weed killer

Meaning: the passing of traits from parents to offspring

Part of speech: noun

Example: Heredity plays a significant role in genetics.

Category: Science › Genetics

Synonyms: inheritance

Meaning: sealed tightly to prevent air or liquid from entering

Part of speech: adjective

Example: The hermetic seal kept the food fresh.

Category: Science › Physics

Synonyms: airtight

Meaning: composed of different kinds or types

Part of speech: adjective

Example: The population is heterogeneous, with many cultures represented.

Category: Science › Sociology

Synonyms:

• diverse
• varied

Antonyms: homogeneous

Meaning: The idea that systems should be viewed as wholes, not just as collections of parts.

Part of speech: noun

Example: Holism is important in understanding ecosystems.

Category: Science › Philosophy

Synonyms: wholeness

Meaning: The species name for modern humans.

Part of speech: noun

Example: Homo sapiens are characterized by their ability to use complex language.

Category: Science › Biology

Synonyms: modern humans

Meaning: To make uniform or similar in composition.

Part of speech: verb

Example: The process will homogenize the mixture for better consistency.

Category: Science › Chemistry

Synonyms: standardize