Meaning: the science of manipulating matter on an atomic or molecular scale

Part of speech: noun

Example: Nanotechnology is used in medicine and electronics.

Category: Science › Technology

Meaning: The United States government agency responsible for the nation's civilian space program.

Part of speech: noun

Example: NASA launched a new satellite into orbit.

Category: Science › Space Exploration

Meaning: The study of plants, animals, and the environment.

Part of speech: noun

Example: He is studying natural history at university.

Category: Science › Biology

Synonyms:

• biology
• ecology

Meaning: The process by which organisms better adapted to their environment tend to survive and produce more offspring.

Part of speech: noun

Example: Natural selection is a key mechanism of evolution.

Category: Science › Biology

Synonyms: evolutionary process

Meaning: A person who studies or is an expert in natural history.

Part of speech: noun

Example: The naturalist observed the birds in their habitat.

Category: Science › Biology

Synonyms:

• biologist
• ecologist

Meaning: An extinct species of human that lived in Europe and Asia.

Part of speech: noun

Example: Neanderthals were known for their robust build and use of tools.

Category: Science › Anthropology

Meaning: A cloud of gas and dust in space, often forming stars.

Part of speech: noun

Example: The Orion Nebula is one of the most famous nebulae.

Category: Science › Astronomy

Meaning: A chemical element used in neon signs, known for its bright colors.

Part of speech: noun

Example: The neon lights lit up the street at night.

Category: Science › Chemistry

Meaning: To make something ineffective or harmless.

Part of speech: verb

Example: The team worked to neutralize the threat.

Category: Science › Chemistry

Synonyms:

• counteract
• nullify

Antonyms:

• aggravate
• intensify

Meaning: A subatomic particle with no electric charge found in the nucleus of an atom.

Part of speech: noun

Example: Neutrons are essential for the stability of atoms.

Category: Science › Physics

Synonyms: subatomic particle

Meaning: A dense stellar remnant composed mostly of neutrons, formed after a supernova.

Part of speech: noun

Example: A neutron star is incredibly dense and has a strong gravitational pull.

Category: Science › Astrophysics

Meaning: The phase of the moon when it is not visible from Earth.

Part of speech: noun

Example: The new moon marks the beginning of a new lunar cycle.

Category: Science › Astronomy

Synonyms:

• dark moon
• lunar phase

Meaning: A connection or series of connections linking two or more things.

Part of speech: noun

Example: The nexus between education and employment is crucial.

Category: Science › Connections

Synonyms:

• link
• connection

Meaning: The ability to see in low light conditions.

Part of speech: noun

Example: The night vision goggles helped them see in the dark.

Category: Science › Vision

Synonyms:

• low-light vision
• night sight

Meaning: A salt or ester of nitric acid.

Part of speech: noun

Example: Nitrates are often used in fertilizers.

Category: Science › Chemistry

Meaning: Relating to or containing nitric acid.

Part of speech: adjective

Example: Nitric acid is a strong acid used in various industries.

Category: Science › Chemistry

Meaning: A highly corrosive acid used in fertilizers and explosives.

Part of speech: noun

Example: Nitric acid can cause severe burns.

Category: Science › Chemistry

Meaning: A prefix used to denote compounds containing nitrogen.

Part of speech: prefix

Example: Nitro-glycerine is used in explosives.

Category: Science › Chemistry

Meaning: A chemical element essential for life, found in the atmosphere.

Part of speech: noun

Example: Nitrogen makes up about 78% of the Earth's atmosphere.

Category: Science › Chemistry

Synonyms:

• N
• azote

Meaning: An explosive liquid used in dynamite.

Part of speech: noun

Example: Nitro-glycerine is highly unstable.

Category: Science › Chemistry

Meaning: Relating to or containing nitrous oxide.

Part of speech: adjective

Example: Nitrous oxide is used as an anesthetic.

Category: Science › Chemistry

Meaning: A system of names used in a particular field.

Part of speech: noun

Example: The scientific nomenclature can be complex.

Category: Science › Biology

Synonyms:

• terminology
• classification

Meaning: Relating to the nucleus of an atom or nuclear energy.

Part of speech: adjective

Example: Nuclear power is a significant source of energy.

Category: Science › Physics

Synonyms:

• atomic
• nucular

Meaning: Material used in nuclear reactors to produce energy.

Part of speech: noun

Example: Uranium is a common type of nuclear fuel.

Category: Science › Energy

Synonyms:

• nuclear material
• reactor fuel

Meaning: A device used to initiate and control a sustained nuclear chain reaction.

Part of speech: noun

Example: The nuclear reactor provides energy for the city.

Category: Science › Energy

Synonyms:

• reactor
• nuclear plant

Meaning: A theoretical climate condition following a nuclear war, characterized by severe cold and darkness.

Part of speech: noun

Example: Scientists are studying the effects of nuclear winter on the environment.

Category: Science › Environmental Science

Synonyms: climate catastrophe

Meaning: The central part of an atom or a cell.

Part of speech: noun

Example: The nucleus contains the cell's genetic material.

Category: Science › Biology

Synonyms:

• core
• center

Meaning: too many to be counted

Part of speech: adjective

Example: There are numberless stars in the sky.

Category: Science › Astronomy

Synonyms:

• countless
• innumerable

Antonyms:

• few
• limited

Meaning: able to be seen or noticed

Part of speech: adjective

Example: The changes in the environment are observable.

Category: Science › Observation

Synonyms:

• visible
• noticeable

Antonyms:

• invisible
• unnoticeable

Meaning: the act of watching something carefully.

Part of speech: noun

Example: Her observation of the stars was fascinating.

Synonyms:

• watching
• noticing

Antonyms:

• ignorance
• overlooking

Meaning: related to the act of observing.

Part of speech: adjective

Example: The observational study provided valuable data.

Category: Science › Research

Synonyms:

• watchful
• perceptive

Antonyms:

• unobservant
• blind

Meaning: a building or place for observing astronomical events.

Part of speech: noun

Example: The observatory is open to the public on weekends.

Category: Science › Astronomy

Synonyms:

• watchtower
• viewing station

Meaning: the study of the ocean and its phenomena.

Part of speech: noun

Example: Oceanography helps us understand marine ecosystems.

Category: Science › Marine Biology

Synonyms:

• marine science
• ocean studies

Meaning: a hydrocarbon used as a fuel, often in gasoline.

Part of speech: noun

Example: Higher octane fuel can improve engine performance.

Category: Science › Chemistry

Synonyms:

• fuel
• gasoline

Meaning: A distinctive smell, especially an unpleasant one.

Part of speech: noun

Example: The odor of rotten eggs filled the kitchen.

Category: Science › Chemistry

Synonyms:

• smell
• scent

Antonyms:

• fragrance
• aroma

Meaning: A distinctive smell, particularly one that is unpleasant.

Part of speech: noun

Example: The odour from the garbage was overwhelming.

Category: Science › Chemistry

Synonyms:

• smell
• scent

Antonyms:

• fragrance
• aroma

Meaning: Having no smell.

Part of speech: adjective

Example: The gas is odourless, making it hard to detect.

Category: Science › Chemistry

Synonyms:

• neutral
• inodorous

Antonyms:

• fragrant
• scented

Meaning: The unit of electrical resistance in the International System of Units.

Part of speech: noun

Example: The resistor has a value of 10 ohms.

Category: Science › Physics

Meaning: An acronym for 'Ohm's Law', which relates voltage, current, and resistance.

Part of speech: acronym

Example: According to OHMS, if you increase the voltage, the current will also increase.

Category: Science › Physics

Meaning: A viscous liquid derived from petroleum, used for fuel and lubrication.

Part of speech: noun

Example: The car needs more oil to run smoothly.

Synonyms:

• petroleum
• lubricant