A mask; a masquerade.

To conceal with masks; to disguise.

One who masquerades; a person wearing a mask; one disguised.

To form or collect into a mass; to form into a collective body; to bring together into masses; to assemble.

An analytical instrument which determines the mass of molecules of a substance or fragments of its molecules. It functions by injecting ionized moecules or molecular gragments into a vacuum chamber subjected to a strong magnetic field, in which charged particles move in a curved trajectory.

A method for identifying chemical composition of substances by use of a mass spectrometer.

To produce on a large scale.

Produced in large quantity, often by automated or assembly-line techniques.

of or pertaining to mass spectrometry; determined by mass spectrometry.

To kill in considerable numbers where much resistance can not be made; to kill with indiscriminate violence, without necessity, and contrary to the usages of nations; to butcher; to slaughter; -- limited to the killing of human beings.

One who massacres.

To treat by means of massage; to rub or knead; as, to massage a patient with ointment.

One who practices massage; a masseur or masseuse.

The black rattlesnake (Crotalus tergemina, or Caudisona tergemina), found in the Mississippi Valley.

A stroke made with the cue held vertically.

A priest who celebrates Mass.

The large muscle which raises the under jaw, and assists in mastication.

Of or pertaining to the masseter.

Masseteric.

A man who practices massage.

A woman who practices massage.

Lead monoxide (also called Lead protoxide), PbO, obtained as a yellow amorphous powder, the fused and crystalline form of which is called litharge; lead ocher. It is used as a pigment. It is also called lead oxide yellow, as opposed to red lead, which is lead tetroxide Pb3O4.

A block of the earth's crust bounded by faults and shifted to form peaks of a mountain range.

The state or quality of being massy; ponderousness.

Forming, or consisting of, a large mass; compacted; weighty; heavy; massy.

In a heavy mass.

The state or quality of being massive; massiness.

Same as Masora.

Same as Masorite.

Compacted into, or consisting of, a mass; having bulk and weight or substance; ponderous; bulky and heavy; weighty; heavy; as, a massy shield; a massy rock.

To furnish with a mast or masts; to put the masts of in position; as, to mast a ship.

In Muslim countries, a fixed seat, common in dwellings and in public places.

The pharynx of a rotifer. It usually contains four horny pieces. The two central ones form the incus, against which the mallei, or lateral ones, work so as to crush the food. The lore of a bird.

Furnished with a mast or masts; -- chiefly in composition; as, a three-masted schooner.

To be skillful; to excel.

The senior petty officer of a ship, responsible for discipline aboard the ship.

Dominion; rule; command.

Learned thoroughly.

Inclined to play the master; domineering; imperious; arbitrary.

In a masterful manner; imperiously.

The state of being a master; hence, disposition to command or hector.

Destitute of a master or owner; ungoverned or ungovernable.

The quality or state of being masterly; ability to control wisely or skillfully.

With the skill of a master.

Masterly.

Anything done or made with extraordinary skill; a capital performance; a chef-d'oeuvre; a supreme achievement.

The state or office of a master.

One of a class of poets which flourished in Nuremberg and some other cities of Germany in the 15th and 16th centuries. They bound themselves to observe certain arbitrary laws of rhythm.

A tall and coarse European umbelliferous plant (Peucedanum Ostruthium, formerly Imperatoria). The Astrantia major, a European umbelliferous plant with a showy colored involucre. Improperly, the cow parsnip (Heracleum lanatum).

Abounding in mast; producing mast in abundance; as, the mastful forest; a mastful chestnut.

To cause to go to the masthead as a punishment.

A building in which vessels' masts are shaped, fitted, etc.

Capable of being masticated.

A part of a bridle, the slavering bit.

To grind or crush with, or as with, the teeth and prepare for swallowing and digestion; to chew; as, to masticate food.

One who masticates.

The act or operation of masticating; chewing, as of food.

One who masticates.

A substance to be chewed to increase the saliva.

See Mastic.

Massicot.

A breed of large dogs noted for strength and courage. There are various strains, differing in form and color, and characteristic of different countries.

A phylum of protozoans the kingdom Protista, consisting mainly of free-living flagellated unicellular organisms, lacking photosynthetic capability. Some members are pathogenic in man.

One of the Mastigopoda.

Formerly considered identical to the Infusoria, now distinguished from that group, which has been reordered. See Mastigophora.

Any one of several large spiny-tailed lizards of the genus Uromastix. They inhabit Southern Asia and North Africa.

The act or process of putting a mast or masts into a vessel; also, the scientific principles which determine the position of masts, and the mechanical methods of placing them.

Inflammation of the breast.

Having no mast; as, a mastless vessel.

See Maslin.

An extinct genus of mammals closely allied to the elephant, but having less complex molar teeth, and often a pair of lower, as well as upper, tusks, which are incisor teeth. The species were mostly larger than elephants, and their remains occur in nearly all parts of the world in deposits ranging from Miocene to late Quaternary time.

A large extinct genus of labyrinthodonts, found in the European Triassic rocks.

Pertaining to, or resembling, a mastodon; as, mastodontic dimensions.

Pain occuring in the mamma or female breast, -- a form of neuralgia.

Resembling the nipple or the breast; -- applied specifically to a process of the temporal bone behind the ear. Pertaining to, or in the region of, the mastoid process; mastoidal.

Same as Mastoid.

Inflammation in the mastoid process of the temporal bone.

The natural history of Mammalia.

A primitive genus of termites, mostly extinct; sometimes considered the most primitive isopterans.

A natural family comprising primitive termites.

Mistress.

To achieve sexual gratification by stimulating one's own sexual organs, without the aid of a partner; -- typically to the point of orgasm.

The act of masturbating; sexual self-gratification; onanism.

Full of mast; abounding in acorns, etc.

To grow thick together; to become interwoven or felted together like a mat, as hair when wetted with a sticky substance; as, a long-haired cat whose fur is matted.

A warlike South African Kaffir tribe.

An old dance with swords and bucklers; a sword dance.

The three-banded armadillo (Tolypeutis tricinctus). See Illust. under Loricata.

The killer; the man appointed to kill the bull in bullfights; a bullfighter; a toreador.

A shrike or butcher bird; -- called also mattages.

A large squirrel fish (Holocentrus ascensionis) of Florida and the West Indies.

The bearded tortoise (Chelys fimbriata) of South American rivers.

A place where animals are slaughtered for their hides and tallow.

To be united in marriage; to mate.

a box for holding matches. See first match, n.

A coarse cloth.

A coat made of match-cloth.

Capable of being matched; comparable on equal conditions; adapted to being joined together; correspondent.

A board that has a groove cut into one edge and a tongue cut into the other so they fit tightly together (as in a floor); see match boarding.

A small folder of paper safety matches.

any of several plants of the genus Gutierrezia having tiny matchlike flowerheads.

One who, or that which, matches; a matching machine. See under 3d Match.

a large heavy knife used in Central and South America as a weapon or for cutting vegetation; usually called machete.

having identical or closely similar appearance or properties; as, a pair of matching candlesticks.

An old form of gunlock containing a match for firing the priming; hence, a musket fired by means of a match.

One who makes matches for burning or kinding.

Busy in making or contriving marriages; as, a matchmaking woman.

wood in small pieces or splinters; as, the vessel was beaten to matchwood on the rocks.

To be or become a mate or mates, especially in sexual companionship; as, some birds mate for life; this bird will not mate with that one.

Brought together for sexual activity; bred; -- of animals.

A quilted ornamented dress fabric of silk or silk and wool.

Having no mate.

A stew, commonly of fish, flavored with wine, and served with a wine sauce containing onions, mushrooms, etc.

A vain, unprofitable discourse or inquiry.

Any unprofitable science.

See Alma mater, Dura mater, and Pia mater.

To form from matter; to materialize.

The doctrine of materialists; materialistic views and tenets; called also philosophical materialism.

One who denies the existence of spiritual substances or agents, and maintains that spiritual phenomena, so called, are the result of some peculiar organization of matter. A believer in philosophical materialism.

Of or pertaining to materialism or materialists; of the nature of materialism.