Meaning: To show that something is not true or valid.

Part of speech: verb

Example: The scientist aimed to disprove the existing theory with new evidence.

Category: Science › Research

Synonyms:

• refute
• contradict

Antonyms:

• prove
• confirm

Meaning: To cut apart for analysis or study.

Part of speech: verb

Example: In biology class, we will dissect a frog.

Category: Science › Biology

Synonyms:

• analyze
• examine

Antonyms:

• synthesize
• combine

Meaning: To disappear or cause to disappear.

Part of speech: verb

Example: The fog began to dissipate as the sun rose.

Category: Science › Physics

Synonyms:

• disperse
• vanish

Antonyms:

• accumulate
• gather

Meaning: To mix a solid with a liquid until it becomes part of the liquid.

Part of speech: verb

Example: You need to dissolve the sugar in the water.

Category: Science › Chemistry

Synonyms:

• melt
• liquefy

Antonyms:

• solidify
• freeze

Meaning: To purify a liquid by heating it and collecting the vapor.

Part of speech: verb

Example: The distil process is used to make whiskey.

Category: Science › Chemistry

Synonyms:

• purify
• refine

Antonyms:

• contaminate
• pollute

Meaning: Clearly different or unique.

Part of speech: adjective

Example: The two species have distinct characteristics.

Category: Science › Biology

Synonyms:

• different
• unique

Antonyms:

• similar
• alike

Meaning: Able to be recognized as different or distinct.

Part of speech: adjective

Example: The two species are distinguishable by their color.

Category: Science › Biology

Synonyms:

• identifiable
• recognizable

Antonyms:

• indistinguishable
• similar

Meaning: Relating to the way something is distributed.

Part of speech: adjective

Example: The distributional patterns of species can reveal much about their habitats.

Category: Science › Ecology

Meaning: Twins that develop from two separate eggs fertilized by two separate sperm cells.

Part of speech: noun

Example: Dizygotic twins are also known as fraternal twins.

Category: Science › Biology

Meaning: Deoxyribonucleic acid; the molecule that carries genetic information.

Part of speech: noun

Example: DNA determines our physical traits.

Category: Science › Genetics

Synonyms: genetic material

Meaning: A technique used to identify individuals based on their DNA profiles.

Part of speech: noun

Example: DNA fingerprinting is used in criminal investigations.

Category: Science › Forensics

Synonyms: DNA profiling

Meaning: A test that analyzes DNA to determine genetic relationships.

Part of speech: noun

Example: A DNA test confirmed their family connection.

Category: Science › Genetics

Synonyms: genetic test

Meaning: A type of small shark, often found in shallow waters.

Part of speech: noun

Example: The fisherman caught a dogfish while fishing near the shore.

Category: Science › Marine Biology

Meaning: A marine mammal known for its intelligence and playful behavior.

Part of speech: noun

Example: The dolphin jumped out of the water.

Category: Science › Marine Biology

Synonyms:

• marine mammal
• cetacean

Meaning: A facility for the display and training of dolphins.

Part of speech: noun

Example: The dolphinarium offers shows and educational programs.

Category: Science › Marine Biology

Synonyms:

• marine park
• aquarium

Meaning: The change in frequency of a wave in relation to an observer moving relative to the source of the wave.

Part of speech: noun

Example: Astronomers use the Doppler shift to determine the speed of stars.

Category: Science › Physics

Meaning: A chemical reaction where two compounds exchange components.

Part of speech: noun

Example: Double decomposition is common in precipitation reactions.

Category: Science › Chemistry

Synonyms: double displacement

Meaning: The shape of DNA, consisting of two intertwined strands.

Part of speech: noun

Example: The double helix structure is crucial for genetic information.

Category: Science › Biology

Synonyms: spiral

Meaning: A study where neither the participants nor the researchers know who receives treatment.

Part of speech: adjective

Example: The double-blind trial ensured unbiased results.

Category: Science › Research

Synonyms: blind study

Meaning: a current of air moving downward.

Part of speech: noun

Example: The down draught made the room feel colder.

Category: Science › Meteorology

Synonyms: downdraft

Meaning: to search for water or minerals using a divining rod.

Part of speech: verb

Example: He tried to dowse for water in the dry field.

Category: Science › Geology

Synonyms: divine

Meaning: a road associated with the practice of dowsing.

Part of speech: noun

Example: They found water along the dowsing road.

Category: Science › Geology

Meaning: A device used to dispense drops of liquid.

Part of speech: noun

Example: Use a dropper to add the medicine.

Category: Science › Laboratory Equipment

Synonyms: pipette

Meaning: A genus of small fruit flies used in genetic research.

Part of speech: noun

Example: Drosophila are commonly used in laboratories.

Category: Science › Genetics

Synonyms: fruit fly

Meaning: Solid carbon dioxide used as a refrigerant.

Part of speech: noun

Example: They used dry ice to keep the food cold during the picnic.

Category: Science › Chemistry

Synonyms: solid CO2

Meaning: A theoretical structure in linguistics.

Part of speech: noun

Example: The D-structure helps explain sentence formation.

Category: Science › Linguistics

Meaning: Able to be drawn out into a thin wire.

Part of speech: adjective

Example: Gold is a ductile metal that can be stretched without breaking.

Category: Science › Materials Science

Synonyms:

• flexible
• malleable

Antonyms:

• brittle
• rigid

Meaning: Able to withstand wear, pressure, or damage.

Part of speech: adjective

Example: This material is very durable and lasts for years.

Category: Science › Materials

Synonyms:

• long-lasting
• sturdy

Antonyms: fragile

Meaning: The length of time something lasts.

Part of speech: noun

Example: The duration of the movie is two hours.

Category: Science › Time

Synonyms:

• length
• period

Antonyms: shortness

Meaning: A fungal disease that affects elm trees.

Part of speech: noun

Example: Dutch elm disease has devastated many forests.

Category: Science › Botany

Synonyms: fungal disease

Meaning: To gradually decrease in size, amount, or strength.

Part of speech: verb

Example: The resources began to dwindle as the project continued.

Category: Science › Growth

Synonyms:

• diminish
• decrease

Antonyms: increase

Meaning: A pair of elements or individuals.

Part of speech: noun

Example: The dyad in the study showed strong interaction.

Category: Science › Mathematics

Synonyms:

• pair
• couple

Meaning: A barrier built to control water flow.

Part of speech: noun

Example: The farmers built a dyke to protect their fields from flooding.

Category: Science › Engineering

Synonyms:

• embankment
• levee

Meaning: An explosive used for blasting.

Part of speech: noun

Example: They used dynamite to clear the construction site.

Category: Science › Chemistry

Synonyms: explosive

Meaning: A unit of force in the centimeter-gram-second system.

Part of speech: noun

Example: One dyne is the force required to accelerate one gram of mass by one centimeter per second squared.

Category: Science › Physics

Synonyms: force unit

Meaning: A chemical element with the symbol Dy and atomic number 66.

Part of speech: noun

Example: Dysprosium is used in nuclear reactors.

Category: Science › Chemistry

Synonyms: element 66

Meaning: The change in frequency or wavelength of a wave in relation to an observer moving relative to the wave source.

Part of speech: noun

Example: The Doppler effect explains why a passing siren sounds different as it approaches.

Category: Science › Physics

Meaning: a signal or alert given in advance of a potential problem.

Part of speech: phrase

Example: The early warning system detected the storm.

Category: Science › Meteorology

Synonyms:

• alert
• notification

Meaning: the planet we live on.

Part of speech: noun

Example: Earth is the third planet from the sun.

Category: Science › Geography

Synonyms:

• world
• planet

Meaning: a sudden shaking of the ground caused by movements of the earth's tectonic plates.

Part of speech: noun

Example: The earthquake caused significant damage to the buildings.

Category: Science › Geology

Synonyms:

• quake
• tremor