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Reading: 100 Science Words That Start With K – Covering All Branches
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Englishan > Vocabulary > Words List > 100 Science Words That Start With K – Covering All Branches
Words List

100 Science Words That Start With K – Covering All Branches

Amelia Wright
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Amelia Wright
Last updated: October 27, 2025
8 Min Read
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Physical science studies how matter and energy move and change. Words like kinetic, kelvin, and kilogram are part of physical science words that start with k, helping explain motion, temperature, and weight.

In This Page
  • List of Science Words That Start With K
    • Physics Science Words That Start With K
    • Chemistry Science Words That Start With K
    • Biology Science Words That Start With K
    • Scientific Words Starting With K
    • Math Science Words That Start With K
    • Earth Science Words Starting With K
    • Technology and Engineering Words That Start With K
    • Forensic Science Words With K
    • General Science Words That Start With K
  • FAQs

Learning these words makes it easier to talk about science in English and describe important ideas clearly.

List of Science Words That Start With K

  • Kelvin
  • Kinetic
  • Karyotype
  • Krypton
  • Keratin
  • Kaolinite
  • Karyokinesis
  • Kymograph
  • Karyoplasm
  • Karyomere
  • Karyokine
  • Kerogen
  • Karyolith
  • Karyochrome
  • Kaolin
  • Kite
  • Kelp
  • Kava
  • Kymatology
  • Kame
  • Kettlehole
  • Kobold
Science words that start with K in English
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Physics Science Words That Start With K

Kelvin: the base unit of temperature used in the International System of Units, starting from absolute zero.
Kinetic: describing motion or the energy that bodies have because they are moving.
Kinematics: the study of how objects move without considering the forces that cause the motion.
Kilogram: the standard scientific unit for measuring mass, equal to one thousand grams.
Kilovolt: a measure of electrical potential equal to one thousand volts.
Kilowatt: a unit of power equal to one thousand watts, often used for engines or electric devices.
Keplerian: related to Johannes Kepler’s laws describing the motion of planets around the sun.
Kirchhoff’s Law: a rule in physics and electronics that explains how current and voltage behave in circuits.

Words that start with K in physical science including kinetic, Kelvin, kilogram
Words that start with K in physical science for learners

Chemistry Science Words That Start With K

Krypton: a colorless noble gas element, symbol Kr, used in lights and lasers.
Ketone: an organic compound that contains a carbonyl group bonded to two carbon atoms.
Kaolin: a soft white clay used in ceramics, paper coating, and chemical testing.
Kaolinite: the main mineral in kaolin clay, formed from weathered aluminum silicates.
Kerosene: a liquid hydrocarbon fuel used for heating, lamps, and jet engines.
Kjeldahl Method: a chemical process used to measure nitrogen content in organic substances.
Kohlrausch Law: a principle that relates the conductivity of electrolytes to ion concentration.

Biology Science Words That Start With K

Keratin: a strong, fibrous protein found in hair, nails, feathers, and skin.
Kidney: a bean-shaped organ that removes waste and controls water balance in the body.
Karyotype: the full set of chromosomes in a cell, arranged by size and structure.
Kinesis: a type of movement in organisms that is triggered by a stimulus but not directed toward or away from it.
Karyogamy: the fusion of two cell nuclei during sexual reproduction.
Klebsiella: a genus of bacteria that can cause infections in humans.
Karyoplasm: the material found inside the nucleus of a cell.

Scientific Words Starting With K

Knowledge: the information and understanding gained through study, experience, or research.
Kinetics: the study of forces that cause motion or chemical reactions.
Krypton: a gaseous element used in lighting and lasers.
Knot: a unit of speed equal to one nautical mile per hour, used in navigation and science.
Kilobyte: a digital information unit equal to 1,024 bytes.

Math Science Words That Start With K

Kilo: a prefix meaning one thousand, used in metric measurement.
Kernel: the central or most important part of a mathematical function or set.
Knot: in geometry or topology, a loop in three-dimensional space.
Kappa: a Greek letter used in statistics to measure reliability or agreement.
Kurtosis: a measure that describes the shape of a probability distribution curve.

Earth Science Words Starting With K

Karst: a type of landscape formed when water dissolves limestone, creating caves and sinkholes.
Kilauea: an active volcano located in Hawaii known for continuous lava flows.
Kaolin: a fine white clay produced by the weathering of rocks rich in feldspar.
Kame: a mound of sand or gravel left by melting glaciers.
Krakatoa: a volcanic island in Indonesia famous for its 1883 eruption.
Kyanite: a blue mineral found in metamorphic rocks, used as an index of pressure conditions.

Technology and Engineering Words That Start With K

Keyboard: an input device used to type letters and commands into a computer.
Kilobyte: a unit of digital storage equal to 1,024 bytes.
Kinematics: in engineering, the study of motion in mechanisms without regard to force.
Keystroke: a single press of a key on a keyboard or control panel.
Klystron: a vacuum tube used to amplify microwave signals in radar and broadcasting.
Kilovolt: a measure of electrical potential used in high-voltage engineering systems.

Forensic Science Words With K

Keratin: protein from hair, nails, or skin used for DNA or trace analysis.
Karyotype: chromosomal pattern used to identify individuals or detect genetic conditions.
Kinetics: used to study motion and impact during crime or accident reconstruction.
Krypton: an element sometimes used in lighting analysis and forensic tracing.
Klebsiella: bacteria that can be tested in forensic pathology or clinical samples.

General Science Words That Start With K

Knowledge: understanding or awareness gained through learning or observation.
Kinetic: relating to movement or activity.
Kilo: a prefix that means a thousand times the base unit.
Kelvin: the standard unit of temperature based on absolute zero.
Kaolin: a natural mineral clay used across many scientific fields.
Krypton: an inert gas used in lighting and scientific research.

FAQs

What are some common science words that start with K?

Some common science words that start with K include kinetic, kelvin, karyotype, kite, and kelp.

Are there science words starting with K in different fields like biology and physics?

Yes, examples include karyotype (biology), kelvin (physics), kymograph (physical science), and kaolinite (earth science).

Browse Related Word Lists

  • Biology Words That Start With K
  • Geometry Words That Start With K
  • Math Words That Start With K
  • 5 Letter Words That Start With K
  • Words That Start With K
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Amelia Wright
ByAmelia Wright
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Amelia Wright writes the daily word game challenges at Englishan.com, but she plays far beyond one grid. Most mornings move through a Spelling Bee style word hunt, a quick crossword, a few anagram rounds, and a Scrabble like rack in her head, words turning over while the coffee is still hot. And then there is Wordle, her favorite, the small five square heartbeat that sets the tone for the day. She notices what people can recall on the clock, where near spellings and double letters trigger doubt, and which everyday words still feel fair. Readers come for wins that feel earned: familiar vocabulary, steady difficulty, and none of the gotcha tricks that make a puzzle feel smug.
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