A scientist specializing in nuclear physics.

That branch of physics which studies the structure of and phenomena observed in atomic nuclei.

Power derived from nuclear reactions; -- used at present especially of electrical power generated in atomic reactors, but encompassing also fusion power.

A process that alters the energy or structure or composition of an atomic nucleus.

Any of several devices that maintain and control a sustained nuclear fission chain reaction, for the production of energy, heat, or artificial elements, or for research purposes. The main fuel sustaining the reaction and consumed by the process is typically uranium or plutonium.

The resonance absorption of a gamma ray by a nucleus identical to the nucleus that emitted the gamma ray.

A war in which nuclear weapons are used by both sides. As generally used, the term assumes major use of nuclear weapons by at least two opposing warring states. As of 1999, no nuclear war has occurred.

The warhead of a missile containing an atom bomb or hydrogen bomb.

A weapon of great explosive power, such as an atomic bomb or a hydrogen bomb, which depends for most of its explosive power on the release of energy from within atomic nuclei by a nuclear reaction. A fission weapon or a fusion weapon. The term includes atomic shells for cannon.

a hypothetical lowering of global temperature postulated as the aftermath of a full nuclear war. The mechanism of such an effect depends primarily on the injection into the atmosphere of small solid particles, as soot from burning forests, which reflect sunlight and cause a reduction in solar energy retained by the earth.

A ship for which the motive power comes from the energy generated by a nuclear reactor.

A submarine for which the motive power comes from the energy generated by a nuclear reactor. Same as nuclear submarine.

To gather, as about a nucleus or center.

To form into a nucleus or multiple nuclei; as, raindrops may nucleate around silver iodide crystals.

Having a nucleus; nucleate; as, nucleated cells.

A natural or synthetic polymer consisting of chains of ribonucleotide or deoxyribonucleotide units.

Formed like a nucleus or kernel.

A constituent of the nuclei of all cells, containing protein and nucleic acid. It is a colorless amorphous substance, readily soluble in alkaline fluids and especially characterized by its comparatively large content of phosphorus. It also contains nitrogen and sulphur.

Belonging to the Nucleobranchiata. One of the Nucleobranchiata.

See Heteropoda.

Hyaline plasma contained in the nucleus of vegetable cells.

Of or pertaining to the nucleolus of a cell.

Having a nucleole, or second inner nucleus.

The nucleus within a nucleus; nucleolus.

A little nucleus.

A neutron or proton, when contained within an atomic nucleus.

The sum of the number of neutrons and protons in an atomic nucleus.

The matter composing the nucleus of a cell; the protoplasm of the nucleus; karyoplasma.

Of or pertaining to nucleoplasm; -- esp. applied to a body formed in the developing ovum from the plasma of the nucleus of the germinal vesicle.

A type of molecule found in all living organisms, present mostly in chemically combined form as a component of nucleic acids, and also in smaller amounts in free form, consisting of a pentose sugar bound to a purine or pyrimidine base; two types of nucleoside, ribonucleoside and deoxyribonucleoside, are present. The most common bases present in nucleosides are adenine, cytosine, uracil, guanine, and thymine, and to a lesser extent hypoxanthine and other bases are found. The most commmon ribonucleosides composed from these bases are called adenosine, cytidine, uridine, and guanosine. The forms esterified with orthophosphoric at the 5-position of the pentose are called nucleotides. The nucleotides form the monomer units which are combined into DNA and RNA, which carry the genetic information required for reproduction in all known organisms.

a phosphate ester of a nucleoside; one of the monomeric components of DNA or RNA.

A genus of small marine bivalve shells, having a pearly interior.

Same as Nutlet.

See Nucamentaceous.

The act of stripping, or making bare or naked.

To walk quickly with the head bent forward; -- often with along.

Bare; naked; unclothed; undraped; as, a nude statue.

A gentle push, or jog, as with the elbow.

Having tentacles without vibratile cilia.

Of or pertaining to the Nudibranchiata. One of the Nudibranchiata.

A division of opisthobranchiate mollusks, having no shell except while very young. The gills are naked and situated upon the back or sides. See Ceratobranchia.

Same as Nudibranch.

Having the stems leafless.

The act of making nude.

The quality or state of being nude; nakedness.

a pestiferous boring and dull person.

Futility; trifling talk or behavior; drollery.

Trifles; jests.

The act or practice of trifling.

Trifling; vain; futile; insignificant.

A lump; a mass, esp. a native lump of a precious metal; as, a nugget of gold.

To render trifling or futile; to make silly.

That which annoys or gives trouble and vexation; that which is offensive or noxious.

One who makes or causes a nuisance.

No; not any; as, nul disseizin; nul tort.

One of the beads in nulled work.

A water course, esp. a dry one; a gully; a gorge; -- orig. an East Indian term.

Turned so as to resemble nulls.

The state or condition of being nowhere.

The act of nullifying; a rendering void and of no effect, or of no legal effect.

One who nullifies or makes void; one who maintains the right to nullify a contract by one of the parties.

To make void; to render invalid; to deprive of legal force or efficacy.

A name for certain crustaceous marine algae which secrete carbonate of lime on their surface, and were formerly thought to be of animal nature. They are now considered corallines of the genera Melobesia and Lithothamnion.

To make numb; to deprive of the power of sensation or motion; to render senseless or inert; to deaden; to benumb; to stupefy.

Numbness.

That which admits of being counted or reckoned; a unit, or an aggregate of units; a numerable aggregate or collection of individuals; an assemblage made up of distinct things expressible by figures.

One who numbers.

Numerous.

Innumerable; countless.

Numerous.

pl. of Number. The fourth book of the Pentateuch, containing the census of the Hebrews.

The torpedo, which numbs by the electric shocks which it gives.

See Nombles.

The condition of being numb; that state of a living body in which it loses, wholly or in part, the power of feeling or motion.

an embroidered rug made from a coarse Indian felt.

A genus of birds comprising certain of the curlews.

Capable of being numbered or counted.

skill with numbers and mathematics; -- the skill with numbers analogous to literacy, the skill of reading.

A figure or character used to express a number; as, the Arabic numerals, 1, 2, 3, etc.; the Roman numerals, I, V, X, L, etc.

According to number; in number; numerically.

Belonging to a certain number; counting as one of a collection or body.

To divide off and read according to the rules of numeration; as, to numerate a row of figures.

The act or art of numbering.

Of or pertaining to numeration; as, a numerative system.

One who numbers.

Any number, proper or improper fraction, or incommensurable ratio. The term also includes any imaginary expression like m + n/-1, where m and n are real numerics.

In a numerical manner; in numbers; with respect to number, or sameness in number; as, a thing is numerically the same, or numerically different.

One who deals in numbers.

Number; -- often abbrev. No.

The state of being numerous; numerousness.

Consisting of a great number of units or individual objects; being many; as, a numerous army; numerous objections.

Of or pertaining to ancient Numidia in Northern Africa.

A subfamily of birds including the guinea fowl and related birds of Africa and Madagascar.

Evincing the presence of a deity; as, a numinous wood; the most numinous moment in the Mass.

Of or pertaining to coins; relating to the science of coins or medals.

The science of coins and medals.

One skilled in numismatics; a numismatologist.

A treatise on, or description of, coins and medals.

One versed in numismatology; usually called a numismatist.

The science which treats of coins and medals, in their relation to history; numismatics.

Of or relating to coins or money.

The arrangement of the red blood corpuscles in rouleaux, like piles of coins, as when a drop of human blood is examined under the microscope.

A fossil of the genus Nummulites and allied genera.

A genus of extinct Tertiary Foraminifera, having a thin, flat, round shell, containing a large number of small chambers arranged spirally.

Of, like, composed of, containing, nummulites; as, nummulitic beds.

A dolt; a blockhead.

A dunce; a dolt; a stupid fellow.

Stupid; doltish.

The 25th letter of the Arabic alphabet, corresponding in pronunciation to n.

In Greenland, an insular hill or mountain surrounded by an ice sheet.

A portion of food taken at or after noon, usually between full meals; a luncheon.

One who announces; a messenger; a nuncio.

The office of a nuncio.

A messenger. The information communicated.

To declare publicly or solemnly; to proclaim formally.

The act of nuncupating.

Publicly or solemnly declaratory.

Nuncupative; oral.

A nundinal letter.

Of or pertaining to a fair, or to a market day.