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656 Nouns That End With IN

Part of Speech:
Word Definitions Synonyms
acetin (noun) any of three liquid acetates that are formed when acetic acid and glycerin are heated together
acetophenetidin (noun) a white crystalline compound used as an analgesic and also as an antipyretic Synonyms: acetphenetidin, phenacetin
acetphenetidin (noun) a white crystalline compound used as an analgesic and also as an antipyretic Synonyms: acetophenetidin, phenacetin
achromatin (noun) the part of a cell nucleus that is relatively uncolored by stains or dyes
acrolein (noun) a pungent colorless unsaturated liquid aldehyde made from propene Synonyms: propenal
actin (noun) one of the proteins into which actomyosin can be split; can exist in either a globular or a fibrous form
actinomycin (noun) any of various red antibiotics isolated from soil bacteria
actomyosin (noun) a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions
adermin (noun) a B vitamin that is essential for metabolism of amino acids and starch Synonyms: pyridoxal, pyridoxamine, pyridoxine, vitamin B6
adrenocorticotrophin (noun) a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex Synonyms: ACTH, adrenocorticotrophic hormone, adrenocorticotropic hormone, adrenocorticotropin, corticotrophin, corticotropin
adrenocorticotropin (noun) a hormone produced by the anterior pituitary gland that stimulates the adrenal cortex Synonyms: ACTH, adrenocorticotrophic hormone, adrenocorticotrophin, adrenocorticotropic hormone, corticotrophin, corticotropin
aflatoxin (noun) a potent carcinogen from the fungus Aspergillus; can be produced and stored for use as a bioweapon
agglutinin (noun) an antibody that causes agglutination of a specific antigen
albumin (noun) a simple water-soluble protein found in many animal tissues and liquids Synonyms: albumen
algin (noun) a gum used especially as a thickener or emulsifier Synonyms: alginic acid
alizarin (noun) an orange-red crystalline compound used in making red pigments and in dyeing Synonyms: alizarine
altcoin (noun) an alternative cryptocurrency
amethopterin (noun) toxic antimetabolite that limits cellular reproduction by acting as an antagonist to folic acid; used to treat certain cancers and psoriasis and rheumatoid arthritis Synonyms: methotrexate, methotrexate sodium
amoxicillin (noun) an antibiotic; a semisynthetic oral penicillin (trade names Amoxil and Larotid and Polymox and Trimox and Augmentin) used to treat bacterial infections Synonyms: Amoxil, Augmentin, Larotid, Polymox, Trimox
amphotericin (noun) an antibiotic and antifungal agent
ampicillin (noun) semisynthetic penicillin (trade names Principen and Polycillin and SK-Ampicillin) Synonyms: Polycillin, Principen, SK-Ampicillin
amygdalin (noun) a bitter cyanogenic glucoside extracted from the seeds of apricots and plums and bitter almonds
anatoxin (noun) a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin Synonyms: toxoid
andelmin (noun) any of several tropical American trees of the genus Andira Synonyms: angelim
aneurin (noun) a B vitamin that prevents beriberi; maintains appetite and growth Synonyms: antiberiberi factor, thiamin, thiamine, vitamin B1
angiotensin (noun) any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels Synonyms: angiotonin, Hypertensin
angiotonin (noun) any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels Synonyms: angiotensin, Hypertensin
antifertilizin (noun) An immunologically specific substance produced by animal sperm to implement attraction by the egg before fertilization.
antimycin (noun) a crystalline antibiotic active against various fungi
antitoxin (noun) an antibody that can neutralize a specific toxin
antivenin (noun) an antitoxin that counteracts the effects of venom from the bite of a snake or insect or other animal Synonyms: antivenene
arcsin (noun) the inverse function of the sine; the angle that has a sine equal to a given number Synonyms: arc sine, arcsine, inverse sine
ashbin (noun) a bin that holds rubbish until it is collected Synonyms: ash-bin, ash bin, ashcan, dustbin, garbage can, trash barrel, trash bin, trash can, wastebin
aspirin (noun) the acetylated derivative of salicylic acid; used as an analgesic anti-inflammatory drug (trade names Bayer, Empirin, and St. Joseph) usually taken in tablet form; used as an antipyretic; slows clotting of the blood by poisoning platelets Synonyms: acetylsalicylic acid, Bayer, Empirin, St. Joseph
assassin (noun) a murderer (especially one who kills a prominent political figure) who kills by a surprise attack and often is hired to do the deed Synonyms: assassinator, bravo
(noun) a member of a secret order of Muslims (founded in the 12th century) who terrorized and killed Christian Crusaders
atorvastatin (noun) an oral drug (trade name Lipitor) that is effective in lowering triglycerides; potent in reducing LDL cholesterol because higher doses can be given Synonyms: Lipitor
auxin (noun) a plant hormone that promotes root formation and bud growth
ayin (noun) the 16th letter of the Hebrew alphabet
azadirachtin (noun) insecticide
azithromycin (noun) a systemic antibacterial medicine (trade name Zithromax) that is prescribed to treat bacterial infections in many different parts of the body Synonyms: Zithromax
bacitracin (noun) a polypeptide antibiotic of known chemical structure effective against several types of Gram-positive organisms; usually applied locally
backspin (noun) spin (usually of a moving ball) that retards or reverses the forward motion
baldachin (noun) ornamented canopy supported by columns or suspended from a roof or projected from a wall (as over an altar)
bargain (noun) an agreement between parties (usually arrived at after discussion) fixing obligations of each Synonyms: deal
(noun) an advantageous purchase Synonyms: buy, steal
basin (noun) a bowl-shaped vessel; usually used for holding food or liquids
(noun) a bathroom sink that is permanently installed and connected to a water supply and drainpipe; where you can wash your hands and face Synonyms: lavatory, washbasin, washbowl, washstand
(noun) the entire geographical area drained by a river and its tributaries; an area characterized by all runoff being conveyed to the same outlet Synonyms: catchment area, catchment basin, drainage area, drainage basin, river basin, watershed
(noun) a natural depression in the surface of the land often with a lake at the bottom of it
(noun) the quantity that a basin will hold Synonyms: basinful
bearskin (noun) tall hat; worn by some British soldiers on ceremonial occasions Synonyms: busby, shako
(noun) the pelt of a bear
benjamin (noun) gum resin used especially in treating skin irritation Synonyms: asa dulcis, benzoin, gum benjamin, gum benzoin
benzoin (noun) gum resin used especially in treating skin irritation Synonyms: asa dulcis, benjamin, gum benjamin, gum benzoin
benzylpenicillin (noun) the penicillin that constitutes the principal component of many commercial antibiotics Synonyms: penicillin G
berlin (noun) a limousine with a glass partition between the front and back seats
betweenbrain (noun) the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon Synonyms: diencephalon, interbrain, thalmencephalon
biggin (noun) a child's tight-fitting cap; often ties under the chin
bilirubin (noun) an orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice Synonyms: haematoidin, hematoidin
bin (noun) a container; usually has a lid
(noun) the quantity contained in a bin Synonyms: binful
biotin (noun) a B vitamin that aids in body growth Synonyms: vitamin H
birdbrain (noun) a person with confused ideas; incapable of serious thought Synonyms: addle-head, addlehead, loon
blain (noun) an inflammatory swelling or sore
bloodstain (noun) a discoloration caused by blood
bluefin (noun) largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics Synonyms: bluefin tuna, horse mackerel, Thunnus thynnus
(noun) flesh of very large tuna Synonyms: bluefin tuna
boatswain (noun) a petty officer on a merchant ship who controls the work of other seamen Synonyms: bo's'n, bo'sun, bos'n, bosun
bobbin (noun) a winder around which thread or tape or film or other flexible materials can be wound Synonyms: reel, spool
bodkin (noun) a blunt needle for threading ribbon through loops Synonyms: threader
(noun) a small sharp-pointed tool for punching holes in leather or fabric
(noun) formerly a long hairpin; usually with an ornamental head
(noun) a dagger with a slender blade Synonyms: poniard
boffin (noun) (British slang) a scientist or technician engaged in military research
botulin (noun) potent bacterial toxin produced by the bacterium Clostridium botulinum that causes botulism; can be used as a bioweapon Synonyms: botulinus toxin, botulismotoxin
botulismotoxin (noun) potent bacterial toxin produced by the bacterium Clostridium botulinum that causes botulism; can be used as a bioweapon Synonyms: botulin, botulinus toxin
bowfin (noun) primitive long-bodied carnivorous freshwater fish with a very long dorsal fin; found in sluggish waters of North America Synonyms: Amia calva, dogfish, grindle
brahmin (noun) the highest of the four varnas: the priestly or sacerdotal category Synonyms: brahman
(noun) a member of the highest of the four Hindu varnas Synonyms: brahman
(noun) a member of a social and cultural elite (especially a descendant of an old New England family) Synonyms: brahman
brain (noun) that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord Synonyms: encephalon
(noun) mental ability Synonyms: brainpower, learning ability, mental capacity, mentality, wit
(noun) that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason Synonyms: head, mind, nous, psyche
(noun) the brain of certain animals used as meat
(noun) someone who has exceptional intellectual ability and originality Synonyms: brainiac, Einstein, genius, mastermind
breastpin (noun) a decorative pin worn by women Synonyms: broach, brooch
bromeosin (noun) a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures Synonyms: eosin
bruin (noun) large ferocious bear of Eurasia Synonyms: brown bear, Ursus arctos
(noun) a conventional name for a bear used in tales following usage in the old epic `Reynard the Fox'
buckskin (noun) horse of a light yellowish dun color with dark mane and tail
(noun) a soft yellowish suede leather originally from deerskin but now usually from sheepskin
bulletin (noun) a brief report (especially an official statement issued for immediate publication or broadcast)
bumpkin (noun) a person who is not very intelligent or interested in culture Synonyms: chawbacon, hayseed, hick, rube, yahoo, yokel
burin (noun) a chisel of tempered steel with a sharp point; used for engraving
buskin (noun) a boot reaching halfway up to the knee Synonyms: combat boot, desert boot, half boot, top boot
butyrin (noun) any of three glycerides of butyric acid
cabin (noun) the enclosed compartment of an aircraft or spacecraft where passengers are carried
(noun) small room on a ship or boat where people sleep
(noun) a small house built of wood; usually in a wooded area
caffein (noun) a bitter alkaloid found in coffee and tea that is responsible for their stimulating effects Synonyms: caffeine
calamondin (noun) a fruit of the calamondin tree.
calcitonin (noun) thyroid hormone that tends to lower the level of calcium in the blood plasma and inhibit resorption of bone Synonyms: thyrocalcitonin
calfskin (noun) fine leather from the skin of a calf Synonyms: calf
calkin (noun) a metal cleat on the bottom front of a horseshoe to prevent slipping Synonyms: calk
candlepin (noun) a bowling pin that is thin by comparison with a tenpin
cannabin (noun) a resin obtained from the hemp plant; thought to be the active narcotic agent in marijuana Synonyms: cannabis resin
cannikin (noun) a small can
(noun) a wooden bucket
capelin (noun) very small northern fish; forage for sea birds and marine mammals and other fishes Synonyms: capelan, caplin
caplin (noun) very small northern fish; forage for sea birds and marine mammals and other fishes Synonyms: capelan, capelin
capsaicin (noun) colorless pungent crystalline compound derived from capsicum; source of the hotness of hot peppers of the genus Capsicum such as chili and cayenne and jalapeno
captain (noun) a dining-room attendant who is in charge of the waiters and the seating of customers Synonyms: headwaiter, maitre d', maitre d'hotel
(noun) the pilot in charge of an airship Synonyms: senior pilot
(noun) the naval officer in command of a military ship Synonyms: skipper
(noun) an officer who is licensed to command a merchant ship Synonyms: master, sea captain, skipper
(noun) a policeman in charge of a precinct Synonyms: police captain, police chief
(noun) an officer holding a rank below a major but above a lieutenant
(noun) the leader of a group of people Synonyms: chieftain
capuchin (noun) monkey of Central America and South America having thick hair on the head that resembles a monk's cowl Synonyms: Cebus capucinus, ringtail
(noun) a hooded cloak for women
capulin (noun) Mexican black cherry Synonyms: Mexican black cherry
(noun) Mexican black cherry tree having edible fruit Synonyms: capulin tree, Prunus capuli
carbomycin (noun) a colorless basic antibiotic that inhibits the growth of Gram-positive organisms
carotin (noun) an orange isomer of an unsaturated hydrocarbon found in many plants; is converted into vitamin A in the liver Synonyms: carotene, provitamin A
carrageenin (noun) a colloidal extract from carrageen seaweed and other red algae Synonyms: carrageenan
casein (noun) a water-base paint made with a protein precipitated from milk Synonyms: casein paint
(noun) a milk protein used in making e.g. plastics and adhesives
catamountain (noun) bushy-tailed wildcat of Europe that resembles the domestic cat and is regarded as the ancestor of the domestic cat Synonyms: European wildcat, Felis silvestris
catechin (noun) a tannic acid that is extracted from black catechu as a white crystalline substance
catkin (noun) a cylindrical spikelike inflorescence Synonyms: ament
cephalexin (noun) a cephalosporin antibiotic (trade names Keflex and Keflin and Keftab) commonly prescribed for mild to moderately severe infections of the skin or ears or throat or lungs or urinary tract Synonyms: Keflex, Keflin, Keftab

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