Category: Science & Medicine

An arc; especially an electric arc.

A unit of area equal to 100 square meters.

An atom of an element with the same number of protons but a different mass number.

The colored part of the eye; also the flower iris.

A radioactive chemical element with symbol Es.

An extinct genus of early hominins from Africa.

Control system for maintaining an artificial environment for aquatic plants and animals.

An anxiety disorder involving fear of places or situations that may feel hard to escape.

A common pain reliever and fever reducer.

A fibrous mineral formerly used in insulation and fireproofing.

A neurotransmitter found in the nervous system.

A colorless, volatile solvent used in chemistry and industry.

A standardized achievement test.

Loss of normal muscle tone.

Relating to atopy or atopic dermatitis.

The smallest unit of a chemical element.

A hormone and neurotransmitter involved in the body's stress response.

A severe, rapid allergic reaction.

A heat-treatment process that softens a material and changes its properties.

Anus.

A lens corrected to reduce chromatic aberration.

A mixture or alloy of mercury with another metal.

An enzyme that breaks down starch.

A single-celled protozoan that changes shape and moves with pseudopods.

Japan's automated system for collecting meteorological observation data.

A basic substance that neutralizes acids.

Alcohol; also an alcoholic drink or alcohol-based sanitizer.

The chemical element argon (Ar).

An aldehyde.

A protein found in blood and other body fluids.

The chemical element aluminum.

A gemstone known for color change under different light.

An allergy, or a strong aversion to something.

Aloe, especially aloe arborescens.

A word with the opposite meaning of another word.

A small sealed glass vial, especially for medicine or injections.

The SI unit of electric current.

An extinct spiral-shelled cephalopod.

A pungent alkaline gas or its aqueous solution.

A charged atom or molecule.

A hormone produced by the pancreas that regulates blood sugar.

Influenza; the flu.

Sexual impotence; inability to achieve or sustain sexual function.

A virus; a microscopic infectious agent.

A wave in water, physics, hair, or a crowd.

A diacritic or sound change associated with umlaut.

The chemical element uranium (U).

A volatile organic compound used as a solvent and historically as an anesthetic.

Aerosol; also an aerosol spray can or spray product.

A serious disease caused by HIV that weakens the immune system.

An ester, a chemical compound derived from an acid and an alcohol.

A female sex hormone.

Ethanol; ethyl alcohol.

Ethanol; ethyl alcohol.

A flammable hydrocarbon gas used in industry and chemistry.

Energy, strength, or stamina; also physical energy in the science sense.

A hormone that stimulates red blood cell production.

A rare chemical element, symbol Er.

A historical hand-operated electric generator; also electricity.

Becoming too hot, or becoming overly excited.

A luminous atmospheric display near the poles.

The act of ending a patient's life to relieve suffering.

A form of oxygen with three atoms in each molecule.

A region of severe ozone depletion in the upper atmosphere.

Orion; the constellation, and also the Orion Nebula.

A molecule made of a small number of repeating units.

A unit of weight or volume, abbreviated oz.

Carbon, the chemical element.

A milk protein used in food and industrial products.

Inflammation of a mucous membrane with excessive mucus.

A tube inserted into the body to drain or deliver fluids.

A chemical element, symbol Cd.

The stimulant found in coffee, tea, and some soft drinks.

A small case or container, often used for medicine or scientific instruments.

A chameleon, the color-changing lizard.

A unit for gemstone weight or gold purity.

The chemical element potassium.

Dental or bone decay; carious condition.

A bleaching and disinfecting chemical, usually calcium hypochlorite.

A chemical element with symbol Ca.

A medical chart or record for a patient.

The petals of a flower taken as a unit.

A yellow to orange pigment found in plants, especially in carrots and other vegetables.

A unit of energy, especially used in food and nutrition.

Camphor; by extension, something that gives a boost or impetus.

Gauze, especially for medical use.

Gaussian; relating to the normal distribution or Gaussian functions.

A chemical element with symbol Ga.

A unit of volume.

A medicinal alkaloid used to treat malaria.

The study of human movement.

A medicinal compound called chinoform or quinoform.

A chimera; also a mythological chimera.

A unit used to measure radioactivity.

Asbestos dust, especially in a hazardous or contaminated context.

A metric prefix meaning 1000; by extension, an abbreviation for kilogram or kilometre in some contexts.

A unit of mass equal to 1,000 grams.

A unit of power equal to 1,000 watts.

A plaster cast used to immobilize an injured limb; also gypsum or plaster of Paris in some uses.

A unit of electric charge; also a cron job scheduling term.

A very distant, extremely luminous active galactic nucleus.

A crown, especially a dental crown or a former British coin.

A patient or person suffering from an illness.

A crystal or crystalline material.

The rate at which creatinine is cleared from the blood by the kidneys.

A tar-like chemical mixture used as a wood preservative and disinfectant.

A genetically identical copy of an organism, cell, or object.

A device for measuring very short intervals of time.

The chemical element chromium.

A genus of green algae.

A graph, chart, or diagram.

A unit of mass equal to one thousandth of a kilogram.

The glans, especially the glans penis.

The stored form of glucose in animals and fungi.

A detailed study of a specific case or example.

Care, especially in a medical or nursing context.

Chemical; synthetic.

A structural protein found in hair, skin, nails, and similar tissues.

An overgrown, raised scar caused by excess scar tissue.

The complete set of genetic material in an organism.

A gel, especially in chemistry or materials.

Germanium (Ge).

A gene.

Cocaine, the illicit stimulant drug.

A Soviet or Russian space traveler.

Cobalt, the chemical element, or the deep blue color named after it.

A cobra; a venomous snake with a hood.

A coma in astronomy or medicine; also a lens defect.

A structural protein found in connective tissue.

A drug used to treat gout and related inflammation.

A waxy steroid found in animal tissues and blood.

A substance made of microscopic particles dispersed in another medium.

A condor, especially the Andean condor.

A gorilla, especially the western gorilla.

Science; the study of the natural and physical world.

The Southern Cross; an asterism in Crux.

A suspension in a vehicle, or a suspension mixture in chemistry.

Saturn, the Roman god, or Saturn, the planet.

A satellite.

A plant-derived compound used in soap, detergents, and medicine.

A highly toxic nerve agent used as a chemical weapon.

Salvarsan, a brand name for arsphenamine.

Semen; seed fluid.

Motion sickness from being at sea.

Cyan.

A word or term with the same or nearly the same meaning as another.

A shallow dish used in laboratories, especially for culturing specimens.

A term for a molecular chaperone, and by extension a person who accompanies or supervises someone.

Sugar; also a derogatory internet slang term for schizophrenia.

A type of wide-field reflecting telescope camera.

Short-term stay or care, especially for temporary placement in a facility.

A shock, crisis, or severe medical state.

The brightest star in the night sky, in Canis Major.

A synthetic polymer used for heat-resistant and flexible materials.

A chemical element; in some contexts, the word also overlaps with silicone.

A tube-shaped device used to inject or withdraw liquid.

A three-dimensional shape with two parallel circular ends and a curved side.

A set of symptoms or a characteristic pattern of medical or psychological features.

A unit of heredity in living organisms.

A starch-digesting enzyme, especially an amylase.