| fascicle | (noun) a bundle of fibers (especially nerve fibers) | Synonyms: fasciculus, fiber bundle, fibre bundle |
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| (noun) an installment of a printed work | Synonyms: fascicule |
| follicle | (noun) any small spherical group of cells containing a cavity | - |
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| funicle | (noun) the stalk of a plant ovule or seed | Synonyms: funiculus |
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| furuncle | (noun) a painful sore with a hard core filled with pus | Synonyms: boil |
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| gigacycle | (noun) 1,000,000,000 periods per second | Synonyms: Gc, GHz, gigacycle per second, gigahertz |
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| granduncle | (noun) an uncle of your father or mother | Synonyms: great-uncle |
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| hemicycle | (noun) a plane figure with the shape of half a circle | Synonyms: semicircle |
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| heterocycle | (noun) a ring of atoms of more than one kind; especially a ring of carbon atoms containing at least one atom that is not carbon | Synonyms: heterocyclic ring |
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| (noun) a compound containing a heterocyclic ring | Synonyms: heterocyclic, heterocyclic compound |
| housecleaning | (noun) the act of cleaning the rooms and furnishings of a house | - |
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| (noun) (figurative) the act of reforming by the removal of unwanted personnel or practices or conditions | - |
| icicle | (noun) ice resembling a pendent spear, formed by the freezing of dripping water | - |
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| inclemency | (noun) excessive sternness | Synonyms: hardness, harshness, rigor, rigorousness, rigour, rigourousness, severeness, severity, stiffness |
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| (noun) weather unsuitable for outdoor activities | Synonyms: bad weather, inclementness |
| inclementness | (noun) weather unsuitable for outdoor activities | Synonyms: bad weather, inclemency |
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| keratoscleritis | (noun) inflammation of the cornea and sclera of the eye | - |
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| kilocycle | (noun) one thousand periods per second | Synonyms: kc, kHz, kilocycle per second, kilohertz |
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| manacle | (noun) shackle that consists of a metal loop that can be locked around the wrist; usually used in pairs | Synonyms: cuff, handcuff, handlock |
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| megacycle | (noun) one million periods per second | Synonyms: Mc, megacycle per second, megahertz, MHz |
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| miracle | (noun) any amazing or wonderful occurrence | - |
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| (noun) a marvellous event manifesting a supernatural act of a divine agent | - |
| monocle | (noun) lens for correcting defective vision in one eye; held in place by facial muscles | Synonyms: eyeglass |
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| monocycle | (noun) a vehicle with a single wheel that is driven by pedals | Synonyms: unicycle |
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| mononucleosis | (noun) an acute disease characterized by fever and swollen lymph nodes and an abnormal increase of mononuclear leucocytes or monocytes in the bloodstream; not highly contagious; some believe it can be transmitted by kissing | Synonyms: glandular fever, infectious mononucleosis, kissing disease, mono |
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| motorcycle | (noun) a motor vehicle with two wheels and a strong frame | Synonyms: bike |
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| muscle | (noun) possessing muscular strength | Synonyms: brawn, brawniness, heftiness, muscularity, sinew |
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| (noun) authority or power or force (especially when used in a coercive way) | - |
| (noun) one of the contractile organs of the body | Synonyms: musculus |
| (noun) animal tissue consisting predominantly of contractile cells | Synonyms: muscular tissue |
| (noun) a bully employed as a thug or bodyguard | Synonyms: muscleman |
| musclebuilder | (noun) someone who does special exercises to develop a brawny musculature | Synonyms: bodybuilder, muscle-builder, muscle builder, muscleman |
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| musclebuilding | (noun) exercise that builds muscles through tension | Synonyms: anaerobic exercise, bodybuilding, muscle building |
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| muscleman | (noun) a bully employed as a thug or bodyguard | Synonyms: muscle |
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| (noun) someone who does special exercises to develop a brawny musculature | Synonyms: bodybuilder, muscle-builder, muscle builder, musclebuilder |
| nephroangiosclerosis | (noun) kidney disease that is usually associated with hypertension; sclerosis of the renal arterioles reduces blood flow that can lead to kidney failure and heart failure | Synonyms: nephrosclerosis |
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| nephrosclerosis | (noun) kidney disease that is usually associated with hypertension; sclerosis of the renal arterioles reduces blood flow that can lead to kidney failure and heart failure | Synonyms: nephroangiosclerosis |
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| nuclease | (noun) general term for enzymes that catalyze the hydrolysis of nucleic acid by cleaving chains of nucleotides into smaller units | - |
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| nucleole | (noun) a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis | Synonyms: nucleolus |
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| nucleolus | (noun) a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis | Synonyms: nucleole |
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| nucleon | (noun) a constituent (proton or neutron) of an atomic nucleus | - |
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| nucleonics | (noun) the branch of physics that studies the internal structure of atomic nuclei | Synonyms: atomic physics, nuclear physics |
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| nucleoplasm | (noun) the protoplasm that constitutes the nucleus of a cell | Synonyms: karyoplasm |
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| nucleoprotein | (noun) any of several substances found in the nuclei of all living cells; consists of a protein bound to a nucleic acid | - |
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| nucleoside | (noun) a glycoside formed by partial hydrolysis of a nucleic acid | - |
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| nucleosynthesis | (noun) (astronomy) the cosmic synthesis of atoms more complex than the hydrogen atom | - |
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| nucleotide | (noun) a phosphoric ester of a nucleoside; the basic structural unit of nucleic acids (DNA or RNA) | Synonyms: base |
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| nucleus | (noun) a part of the cell containing DNA and RNA and responsible for growth and reproduction | Synonyms: cell nucleus, karyon |
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| (noun) any histologically identifiable mass of neural cell bodies in the brain or spinal cord | - |
| (noun) the central structure of the lens that is surrounded by the cortex | Synonyms: lens nucleus |
| (noun) a small group of indispensable persons or things | Synonyms: core, core group |
| (noun) the positively charged dense center of an atom | - |
| (noun) (astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail | - |
| obstacle | (noun) an obstruction that stands in the way (and must be removed or surmounted or circumvented) | - |
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| (noun) something immaterial that stands in the way and must be circumvented or surmounted | Synonyms: obstruction |
| oligonucleotide | (noun) (biochemistry) a polynucleotide whose molecules contain relatively few nucleotides | Synonyms: oligo |
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| oracle | (noun) a shrine where an oracular god is consulted | - |
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| (noun) a prophecy (usually obscure or allegorical) revealed by a priest or priestess; believed to be infallible | - |
| (noun) an authoritative person who divines the future | Synonyms: prophesier, prophet, seer, vaticinator |
| ossicle | (noun) a small bone; especially one in the middle ear | Synonyms: bonelet, ossiculum |
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| osteosclerosis | (noun) abnormal hardening or eburnation of bone | - |
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| otosclerosis | (noun) hereditary disorder in which ossification of the labyrinth of the inner ear causes tinnitus and eventual deafness | - |
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| panicle | (noun) compound raceme or branched cluster of flowers | - |
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| papulovesicle | (noun) a papule that changes into a blister | Synonyms: vesicopapule |
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| particle | (noun) a function word that can be used in English to form phrasal verbs | - |
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| (noun) a body having finite mass and internal structure but negligible dimensions | Synonyms: subatomic particle |
| (noun) (nontechnical usage) a tiny piece of anything | Synonyms: atom, corpuscle, molecule, mote, speck |
| pedicle | (noun) a small stalk bearing a single flower of an inflorescence; an ultimate division of a common peduncle | Synonyms: pedicel |
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| peduncle | (noun) a bundle of myelinated neurons joining different parts of the brain | Synonyms: cerebral peduncle |
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| (noun) stalk bearing an inflorescence or solitary flower | - |
| (noun) the thin process of tissue that attaches a polyp to the body | - |
| pellicle | (noun) thin protective membrane in some protozoa | - |
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| pentacle | (noun) a star with 5 points; formed by 5 straight lines between the vertices of a pentagon and enclosing another pentagon | Synonyms: pentagram, pentangle |
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| pinnacle | (noun) (architecture) a slender upright spire at the top of a buttress or tower | - |
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| (noun) a lofty peak | - |
| (noun) the highest level or degree attainable; the highest stage of development | Synonyms: acme, elevation, height, meridian, peak, summit, superlative, tiptop, top |
| pinocle | (noun) a card game played with a pack of forty-eight cards (two of each suit for high cards); play resembles whist | Synonyms: bezique, penuchle, pinochle |
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| polynucleotide | (noun) (biochemistry) a linear polymer whose molecule is composed of many nucleotide units constituting a section of a nucleic acid molecule | - |
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| popsicle | (noun) ice cream or water ice on a small wooden stick | Synonyms: ice lolly, lollipop, lolly |
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| pronucleus | (noun) the nucleus of the ovum or sperm after fertilization but before they fuse to form the nucleus of the zygote | - |
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| quasiparticle | (noun) a quantum of energy (in a crystal lattice or other system) that has position and momentum and can in some respects be regarded as a particle | - |
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| radicle | (noun) (anatomy) a small structure resembling a rootlet (such as a fibril of a nerve) | - |
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| receptacle | (noun) a container that is used to put or keep things in | - |
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| (noun) an electrical (or electronic) fitting that is connected to a source of power and equipped to receive an insert | - |
| (noun) enlarged tip of a stem that bears the floral parts | - |
| reticle | (noun) a network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument | Synonyms: graticule, reticule |
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| ribonuclease | (noun) a transferase that catalyzes the hydrolysis of ribonucleic acid | Synonyms: ribonucleinase, RNase |
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| ribonucleinase | (noun) a transferase that catalyzes the hydrolysis of ribonucleic acid | Synonyms: ribonuclease, RNase |
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| salesclerk | (noun) a salesperson in a store | Synonyms: clerk, shop assistant, shop clerk |
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| sanicle | (noun) a plant of the genus Sanicula having palmately compound leaves and unisexual flowers in panicled umbels followed by bristly fruit; reputed to have healing powers | Synonyms: snakeroot |
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| sclera | (noun) the whitish fibrous membrane (albuginea) that with the cornea forms the outer covering and protection of the eyeball | Synonyms: sclerotic coat |
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| scleredema | (noun) a skin disease marked by hard edema of the tissue usually beginning in the face | - |
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| sclerite | (noun) hard plate or element of the exoskeleton of some arthropods | - |
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| scleritis | (noun) inflammation of the sclera | - |
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| scleroderma | (noun) an autoimmune disease that affects the blood vessels and connective tissue; fibrous connective tissue is deposited in the skin | Synonyms: dermatosclerosis |
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| sclerometer | (noun) a measuring instrument that measures the hardness of materials by penetrating them with a stylus that has a diamond point | - |
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| scleroprotein | (noun) a simple protein found in horny and cartilaginous tissues and in the lens of the eye | Synonyms: albuminoid |
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| sclerosis | (noun) any pathological hardening or thickening of tissue | Synonyms: induration |
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| sclerotinia | (noun) any fungus of the genus Sclerotinia; some causing brown rot diseases in plants | - |
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| sclerotium | (noun) compact usually dark-colored mass of hardened mycelium constituting a vegetative food-storage body in various true fungi; detaches when mature and can give rise to new growth | - |
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| sclerotomy | (noun) surgical incision of the sclerotic coat of the eye | - |
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| semicircle | (noun) a plane figure with the shape of half a circle | Synonyms: hemicycle |
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| silicle | (noun) short broad silique occurring in some cruciferous plants | - |
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| socle | (noun) a plain plinth that supports a wall | - |
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| spectacle | (noun) a blunder that makes you look ridiculous; used in the phrase `make a spectacle of' yourself | - |
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| (noun) an elaborate and remarkable display on a lavish scale | - |
| (noun) something or someone seen (especially a notable or unusual sight) | - |
| spectacles | (noun) (plural) optical instrument consisting of a frame that holds a pair of lenses for correcting defective vision | Synonyms: eyeglasses, glasses, specs |
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| spiracle | (noun) a breathing orifice | - |
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| sternocleidomastoid | (noun) one of two thick muscles running from the sternum and clavicle to the mastoid and occipital bone; turns head obliquely to the opposite side; when acting together they flex the neck and extend the head | Synonyms: musculus sternocleidomastoideus, sternocleido mastoideus, sternocleidomastoid muscle |
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| tabernacle | (noun) (Judaism) the place of worship for a Jewish congregation | Synonyms: synagogue, temple |
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| tentacle | (noun) any of various elongated tactile or prehensile flexible organs that occur on the head or near the mouth in many animals; used for feeling or grasping or locomotion | - |
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| (noun) something that acts like a tentacle in its ability to grasp and hold | - |
| testicle | (noun) one of the two male reproductive glands that produce spermatozoa and secrete androgens | Synonyms: ball, ballock, bollock, egg, nut, orchis, testis |
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| treacle | (noun) writing or music that is excessively sweet and sentimental | Synonyms: glop, mush, slop |
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| (noun) a pale cane syrup | Synonyms: golden syrup |
| tricycle | (noun) a vehicle with three wheels that is moved by foot pedals | Synonyms: trike, velocipede |
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| tubercle | (noun) a protuberance on a bone especially for attachment of a muscle or ligament | Synonyms: eminence, tuberosity |
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| (noun) small rounded wartlike protuberance on a plant | Synonyms: nodule |
| (noun) a swelling that is the characteristic lesion of tuberculosis | - |
| uncle | (noun) the brother of your father or mother; the husband of your aunt | - |
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| (noun) a source of help and advice and encouragement | - |
| uncleanliness | (noun) lack of cleanly habits | - |
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| uncleanness | (noun) the state of being unsanitary | Synonyms: dirtiness |
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| unclearness | (noun) incomprehensibility as a result of not being clear | - |
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| unicycle | (noun) a vehicle with a single wheel that is driven by pedals | Synonyms: monocycle |
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| utricle | (noun) a small pouch into which the semicircular canals open | Synonyms: utriculus |
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| vehicle | (noun) a conveyance that transports people or objects | - |
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| (noun) a medium for the expression or achievement of something | - |
| (noun) any inanimate object (as a towel or money or clothing or dishes or books or toys etc.) that can transmit infectious agents from one person to another | Synonyms: fomite |
| (noun) any substance that facilitates the use of a drug or pigment or other material that is mixed with it | - |
| ventricle | (noun) a chamber of the heart that receives blood from an atrium and pumps it to the arteries | Synonyms: heart ventricle |
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| (noun) one of four connected cavities in the brain; is continuous with the central canal of the spinal cord and contains cerebrospinal fluid | - |
| versicle | (noun) a short verse said or sung by a priest or minister in public worship and followed by a response from the congregation | - |
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| vesicle | (noun) a small anatomically normal sac or bladderlike structure (especially one containing fluid) | Synonyms: cyst |
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