Meaning: So small that it can only be seen with a microscope.

Part of speech: adjective

Example: Some organisms are microscopic and cannot be seen without special equipment.

Category: Science › Biology

Meaning: One millionth of a second.

Part of speech: noun

Example: The computer processes data in microseconds.

Category: Science › Physics

Meaning: a unit of measurement equal to one-thousandth of an inch

Part of speech: noun

Example: The thickness of the plastic is 10 mil.

Category: Science › Measurement

Synonyms: thousandth

Meaning: a type of fungus that grows in warm, damp places

Part of speech: noun

Example: There was mildew on the bathroom walls.

Category: Science › Biology

Synonyms: fungus

Meaning: affected by mildew

Part of speech: adjective

Example: The mildewed bread was thrown away.

Category: Science › Biology

Synonyms: fungal

Meaning: a unit of distance equal to 1,609 meters

Part of speech: noun

Example: The store is just a mile away.

Category: Science › Measurement

Synonyms: distance

Meaning: the galaxy that contains our solar system

Part of speech: noun

Example: We can see the Milky Way on a clear night.

Category: Science › Astronomy

Synonyms: galaxy

Meaning: a metric prefix meaning one thousandth

Part of speech: prefix

Example: A millimeter is one milli-meter.

Category: Science › Measurement

Meaning: one thousandth of a gram

Part of speech: noun

Example: The dosage is 500 milligrams.

Category: Science › Measurement

Synonyms: mg

Meaning: one thousandth of a liter

Part of speech: noun

Example: Add 50 milliliters of water.

Category: Science › Measurement

Synonyms: ml

Meaning: one thousandth of a meter

Part of speech: noun

Example: The paper is 0.5 millimeters thick.

Category: Science › Measurement

Synonyms: mm

Meaning: one thousandth of a second

Part of speech: noun

Example: The race was won by a millisecond.

Category: Science › Time Measurement

Synonyms: ms

Meaning: A naturally occurring inorganic substance with a definite chemical composition.

Part of speech: noun

Example: Salt is a common mineral found in nature.

Category: Science › Geology

Synonyms:

• element
• compound

Meaning: An optical illusion caused by atmospheric conditions, often seen in deserts.

Part of speech: noun

Example: The travelers thought they saw water ahead, but it was just a mirage.

Category: Science › Optics

Synonyms:

• illusion
• phantom

Meaning: A hypothetical or actual missing part of a sequence.

Part of speech: noun

Example: Scientists are searching for the missing link in human evolution.

Category: Science › Evolution

Synonyms:

• gap
• missing piece

Antonyms:

• complete
• whole

Meaning: The center responsible for managing space missions.

Part of speech: noun

Example: Mission control monitored the spacecraft's journey.

Category: Science › Space

Synonyms:

• control center
• operations center

Antonyms:

• chaos
• disorder

Meaning: To make something less severe or serious.

Part of speech: verb

Example: The government took steps to mitigate the effects of the disaster.

Category: Science

Synonyms:

• alleviate
• reduce

Antonyms:

• aggravate
• intensify

Meaning: The action of reducing the severity of something.

Part of speech: noun

Example: Mitigation of risks is essential in project management.

Category: Science

Synonyms:

• reduction
• alleviation

Meaning: An abbreviation for milliliter, a unit of volume.

Part of speech: noun

Example: Add 50 ml of water to the mixture.

Category: Science

Synonyms: milliliter

Meaning: An abbreviation for millimeter, a unit of length.

Part of speech: noun

Example: The board is 10 mm thick.

Category: Science

Synonyms: millimeter

Meaning: To adjust or change the intensity or frequency of something.

Part of speech: verb

Example: You can modulate the sound to make it clearer.

Category: Science

Synonyms:

• adjust
• regulate

Meaning: Slightly wet; not dry.

Part of speech: adjective

Example: The cake was moist and delicious.

Category: Science › Chemistry

Synonyms:

• damp
• humid

Antonyms: dry

Meaning: To make something slightly wet.

Part of speech: verb

Example: You should moisten the soil before planting.

Category: Science › Chemistry

Synonyms:

• dampen
• wet

Antonyms: dry

Meaning: Water or other liquid in the air or on a surface.

Part of speech: noun

Example: The moisture in the air can affect your health.

Category: Science › Meteorology

Synonyms:

• humidity
• wetness

Antonyms: dryness

Meaning: A fungus that grows in the form of multicellular filaments.

Part of speech: noun

Example: The bread had mold on it.

Category: Science › Biology

Synonyms:

• fungus
• mildew

Meaning: Relating to or consisting of molecules.

Part of speech: adjective

Example: Molecular biology studies the structure of DNA.

Category: Science › Chemistry

Synonyms:

• atomic
• chemical

Meaning: The branch of biology that deals with the structure and function of molecules essential to life.

Part of speech: noun

Example: She is studying molecular biology at university.

Category: Science › Biology

Synonyms:

• biochemistry
• cell biology

Meaning: The smallest unit of a chemical compound that retains its properties.

Part of speech: noun

Example: A water molecule consists of two hydrogen atoms and one oxygen atom.

Category: Science › Chemistry

Synonyms:

• particle
• unit

Meaning: In a liquid state due to heat; melted.

Part of speech: adjective

Example: The molten lava flowed down the volcano.

Category: Science › Geology

Synonyms:

• liquid
• melted

Antonyms: solid

Meaning: A chemical compound consisting of one oxygen atom and one other element.

Part of speech: noun

Example: Carbon monoxide is a colorless, odorless gas.

Category: Science › Chemistry

Synonyms: oxide

Meaning: The study of the form and structure of organisms.

Part of speech: noun

Example: Morphology is important in biology.

Category: Science › Biology

Synonyms:

• structure
• form

Meaning: Covered with mold; musty.

Part of speech: adjective

Example: The old bread was mouldy and inedible.

Category: Science › Biology

Synonyms:

• musty
• fusty

Antonyms: fresh

Meaning: Miles per hour; a unit of speed.

Part of speech: noun

Example: The car was traveling at 60 mph.

Category: Science › Physics

Synonyms:

• speed
• velocity

Meaning: A large, cloud-like formation that appears after a nuclear explosion.

Part of speech: noun

Example: The mushroom cloud rose high into the sky.

Category: Science › Nuclear Physics

Meaning: A strong-smelling substance used in perfumes.

Part of speech: noun

Example: The perfume contained a hint of musk.

Category: Science › Chemistry

Synonyms:

• scent
• fragrance

Meaning: Having a strong, earthy smell.

Part of speech: adjective

Example: The musky scent of the forest was refreshing.

Category: Science › Chemistry

Synonyms:

• earthy
• strong-smelling

Meaning: A chemical weapon used in warfare.

Part of speech: noun

Example: Mustard gas caused severe injuries during the war.

Category: Science › Chemistry

Synonyms: chemical weapon

Meaning: An organism that has undergone a change in its DNA.

Part of speech: noun

Example: The scientist studied the mutant for its unique traits.

Category: Science › Genetics

Synonyms: changed organism

Meaning: To change or undergo a change in form or nature.

Part of speech: verb

Example: The virus can mutate rapidly.

Category: Science › Genetics

Synonyms:

• change
• transform

Antonyms:

• remain
• stay

Meaning: Abbreviation for megawatt, a unit of power.

Part of speech: noun

Example: The power plant generates 500 MW of electricity.

Category: Science › Energy