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n. 1. 1 a family of fishes consisting of the surgeonfishes. fish family
Syn. -- family Acanthuridae [ WordNet 1.5 ]

n. 1. the family of arachnids of the order Acarina consisting of mites.
Syn. -- family Acaridae. [ WordNet 1.5 ]

n. 1. 1 a family of birds consisting of the hawks; -- this family includes the Old World vultures; kites; harriers; and eagles.
Syn. -- family Accipitridae. [ WordNet 1.5 ]

n. 1. 1 the family of trees including the maples.
Syn. -- family Aceraceae, maple family [ WordNet 1.5 ]

‖ n. [ NL. See Acetone; Hæma-. ] (Med.) A morbid condition characterized by the presence of ketone bodies (including acetone, acetoacetic acid and beta-hydroxybutyric acid) in the blood, as in diabetes. [ Webster 1913 Suppl. + AS ]

{ a. [ L. Achaeus, Achaius; Gr. &unr_;. ] Of or pertaining to Achaia in Greece; also, Grecian. -- n. A native of Achaia; a Greek. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. 'akinhtos immovable. ] (Zool.) A group of suctorial Infusoria, which in the adult stage are stationary. See Suctoria. [ 1913 Webster ]

prop. n. The natural family of fish including the sturgeons.
Syn. -- family Acipenseridae. [ WordNet 1.5 ]

n. 1. 1 baneberry.
Syn. -- genus Actaea [ WordNet 1.5 ]

n. 1. 1 tropical trees or shrubs or woody vines.
Syn. -- family Actinidiaceae [ WordNet 1.5 ]

or . A diphthong in the Latin language; used also by the Saxon writers. It corresponds to the Gr. ai. The Anglo-Saxon short æ was generally replaced by a, the long &aemacr_; by e or ee. In derivatives from Latin words with ae, it is mostly superseded by e. For most words found with this initial combination, the reader will therefore search under the letter E. [ 1913 Webster ]

‖n.; pl. Æcidia [ NL., dim. of Gr. &unr_; injury. ] (Bot.) A form of fruit in the cycle of development of the Rusts or Brands, an order of fungi, formerly considered independent plants. [ 1913 Webster ]

n. [ L. aedilis, fr. aedes temple, public building. Cf. Edify. ] A magistrate in ancient Rome, who had the superintendence of public buildings, highways, shows, etc.; hence, a municipal officer. [ 1913 Webster ]

n. The office of an ædile. T. Arnold. [ 1913 Webster ]

a. [ L. Aegeus; Gr. &unr_;. ] Of or pertaining to the sea, or arm of the Mediterranean sea, east of Greece. See Archipelago. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. &unr_;, &unr_;, goat + &unr_;, n. pl., heads. ] (Arch.) Sculptured ornaments, used in classical architecture, representing rams' heads or skulls. [ 1913 Webster ]

n. [ L. aegilopis, Gr. a'igi`lwps, fr. a'i`x, gen. a'igo`s, goat + 'w`ps eye. ] 1. (Med.) An ulcer or fistula in the inner corner of the eye. [ Written also egilops ] AS [ 1913 Webster ]

2. (Bot.) (a) The great wild-oat grass or other cornfield weed. Crabb. (b) [ capitalized ] A genus of plants, called also hardgrass. [ Written also egilops ] [ 1913 Webster + AS ]

‖n. [ L. aegis, fr. Gr. a'igi`s a goat skin, a shield, a'i`x goat, or fr. 'ai`:ssw to rush. ] A shield or protective armor; -- applied in mythology to the shield of Jupiter which he gave to Minerva. Also fig.: A shield; a protection. [ 1913 Webster ]

n. Same as Egophony. [ 1913 Webster ]

‖n. [ L., he is sick. ] (Camb. Univ.) A medical certificate that a student is ill. [ 1913 Webster ]

n. 1. an extinct primate of about 38 million years ago; -- fossils were found in Egypt. [ WordNet 1.5 ]

‖ [ F., shaded enamel. ] (Fine Arts) An art or process of flooding transparent colored glaze over designs stamped or molded on earthenware or porcelain. Ure. [ 1913 Webster ]

n. [ L. Aeneis, Aeneidis, or -dos: cf. F. Énéide. ] The great epic poem of Virgil, of which the hero is Æneas. [ 1913 Webster ]

a. [ L. aëneus. ] (Zool.) Colored like bronze. [ 1913 Webster ]

n. 1. the Irish god of love and beauty; patron deity of young men and women.
Syn. -- Angus Og, Oengus, Angus [ WordNet 1.5 ]

a. [ L. Aeolius, Gr. &unr_;. ] 1. Of or pertaining to Æolia or Æolis, in Asia Minor, colonized by the Greeks, or to its inhabitants; æolic; as, the Æolian dialect. [ 1913 Webster ]

2. Pertaining to Æolus, the mythic god of the winds; aërial. [ 1913 Webster ]

Viewless forms the æolian organ play. Campbell. [ 1913 Webster ]

3. Relating to or caused by wind; as, aeolian erosion. [ WordNet 1.5 ]

Æolian attachment, a contrivance often attached to a pianoforte, which prolongs the vibrations, increases the volume of sound, etc., by forcing a stream of air upon the strings. Moore. --
Æolian harp,
Æolian lyre, a musical instrument consisting of a box, on or in which are stretched strings, on which the wind acts to produce the notes; -- usually placed at an open window. Moore. --
Æolian mode (Mus.), one of the ancient Greek and early ecclesiastical modes. [ 1913 Webster ]

n. 1. 1 a member of one of the four divisions of the prehistoric Greeks.
Syn. -- Eolian [ WordNet 1.5 ]

n. 1. 1 the dialect of Ancient Greek spoken in Thessaly and Boeotia and Aeolis.
Syn. -- Eolic [ WordNet 1.5 ]

a. [ L. Aeolicus; Gr. A'ioliko`s, name of the god of the winds. ] 1. Æolian, 1; as, the Æolic dialect; the Æolic mode. [ 1913 Webster ]

2. (Phys. Geog.) Pertaining to, caused by, or designating, the action of the wind in modifying the earth's surface; as, æolic erosion; æolic sand. Same as aeolian{ 3 }. [ Written also eolic. ] [ Webster 1913 Suppl. ]

{ } n. [ L. aeolipilae; Aeolus god of the winds + pila a ball, or Gr. &unr_; gate (i. e., doorway of Æolus); cf. F. éolipyle. ] An apparatus consisting chiefly of a closed vessel (as a globe or cylinder) with one or more projecting bent tubes, through which steam is made to pass from the vessel, causing it to revolve. [ Written also eolipile. ] [ 1913 Webster ]

☞ Such an apparatus was first described by Hero of Alexandria about 200 years b. c. It has often been called the first steam engine. [ 1913 Webster ]

a. [ Gr. &unr_; changeful + &unr_; a turning, &unr_; to turn. ] (Physics) Exhibiting differences of quality or property in different directions; having properties with different values along different axes; not isotropic. In specialized contexts, synonymous with anisotropic. [ Also spelled eolotropic. ] Sir W. Thomson.
Syn. -- [ 1913 Webster ]

n. (Physics) Difference of quality or property in different directions. [ 1913 Webster ]

prop. n. [ L., fr. Gr. &unr_;. ] (Gr. & Rom. Myth.) The god of the winds, in ancient mythology. [ 1913 Webster ]

n. 1. A period of immeasurable duration. See Eon. [ 1913 Webster ]

2. (Gnosticism) a divine power or nature emanating from the Supreme Being and playing various roles in the operation of the universe.
Syn. -- eon [ WordNet 1.5 ]

3. the longest division of geological time; two or more eras.
Syn. -- eon [ WordNet 1.5 ]

{ } n. [ L. aeon, fr. Gr. a'iwn space or period of time, lifetime, age; akin to L. aevum. See Age. ] 1. An immeasurable or infinite space of time; eternity; a long space of time; an age. [ 1913 Webster ]

The eons of geological time. Huxley. [ 1913 Webster ]

2. (Gnostic Philos.) One of the embodiments of the divine attributes of the Eternal Being. [ 1913 Webster ]

Among the higher æons are Mind, Reason, Power, Truth, and Life. Am. Cyc. [ 1913 Webster ]

☞ Eons were considered to be emanations sent forth by God from the depths of His grand solitude to fulfill various functions in the material and spiritual universe. [ 1913 Webster ]

a. [ Gr. &unr_;. ] Eternal; everlasting; lasting for an indefinitely long time; immortal; not subject to death. Opposite of mortal. “Æonian hills.” Tennyson.
Syn. -- eonian [ 1913 Webster + WordNet 1.5 ]

2. of or pertaining to an eon. [ WordNet 1.5 ]

n. 1. 1 African antelopes: impalas.
Syn. -- genus Aepyceros [ WordNet 1.5 ]

n. 1. 1 coextensive with the order Aepyorniformes.
Syn. -- family Aepyornidae [ WordNet 1.5 ]

n. 1. 1 huge extinct flightless birds: elephant birds.
Syn. -- order Aepyorniformes [ WordNet 1.5 ]

‖ n. [ Gr. &unr_; high + &unr_; bird. ] A gigantic (to 9 ft.) extinct flightless bird, of which fossils were found in Madagascar.
Syn. -- elephant bird [ 1913 Webster + WordNet 1.5 ]

v. t. [ imp. & p. p. Aërated p. pr. & vb. n. Aërating ] [ Cf. F. aérer. See Air, v. t. ] 1. To combine or charge with gas; usually with carbonic acid gas, formerly called fixed air. [ 1913 Webster ]

His sparkling sallies bubbled up as from aërated natural fountains. Carlyle. [ 1913 Webster ]

2. To supply or impregnate with common air; as, to aërate soil; to aërate water. [ 1913 Webster ]

3. (Physiol.) To expose to the chemical action of air; to oxygenate (the blood) by respiration; to arterialize. [ 1913 Webster ]

4. cause a change by passing air through (of sewage)
Syn. -- activate [ WordNet 1.5 ]

Aërated bread, bread raised by charging dough with carbonic acid gas, instead of generating the gas in the dough by fermentation. [ 1913 Webster ]

adj. 1. treated by having air passed or bubbled through it for purification; -- of a liquid [ WordNet 1.5 ]

2. (Physiol.) supplied with oxygen by respiration; -- used of tissues or especially blood
Syn. -- oxygenated [ WordNet 1.5 ]

3. 1 supplied with carbon dioxide
Syn. -- charged [ WordNet 1.5 ]

n. [ Cf. F. aération. ] 1. Exposure to the free action of the air; airing; as, aëration of soil, of spawn, etc. [ 1913 Webster ]

2. (Physiol.) A change produced in the blood by exposure to the air in respiration; oxygenation of the blood in respiration; arterialization. [ 1913 Webster ]

3. The act or preparation of charging a liquid with carbon dioxide gas to make it effervescent. [ 1913 Webster ]

4. the act of charging a liquid with air or oxygen for the purpose of purification. [ WordNet 1.5 +PJC ]

n. 1. That which supplies with air or gas; specif.: (a) An apparatus used for charging mineral waters with gas and in making soda water. (b) A fumigator used to bleach grain, destroying fungi and insects. [ Webster 1913 Suppl. ]

2. an apparatus for exposing something to the air (as sewage). [ WordNet 1.5 ]

{ ‖, n. [ NL. aërenchyma. See Aëro-; Enchyma. ] (Bot.) A secondary respiratory tissue or modified periderm, found in many aquatic plants and distinguished by the large intercellular spaces. [ Webster 1913 Suppl. ]

a. [ L. aërius. See Air. ] 1. Of or pertaining to the air, or atmosphere; inhabiting or frequenting the air; produced by or found in the air; performed in the air; as, aërial regions or currents; the aërial maneuvers of a fighter plane. “Aërial spirits.” Milton. “Aërial voyages.” Darwin. [ 1913 Webster ]

2. Consisting of air; resembling, or partaking of the nature of air. Hence: Unsubstantial; unreal. [ 1913 Webster ]

3. Rising aloft in air; high; lofty; as, aërial spires. [ 1913 Webster ]

4. Growing, forming, living, or existing in the air, as opposed to growing or existing in earth or water, or underground; as, aërial rootlets, aërial plants; the aerial roots of a philodendron. Gray. [ 1913 Webster ]

5. Light as air; ethereal. [ 1913 Webster ]

6. operating or operated overhead especially on elevated cables. aerial conveyers for transporting raw materials [ WordNet 1.5 ]

7. operating or moving in the air. an aerial cable car; aerial combat [ WordNet 1.5 ]

Aerial acid, carbonic acid. [ Obs. ] Ure. --
Aerial perspective. See Perspective. [ 1913 Webster ]

n. 1. (Football) a pass to a receiver downfield from the passer.
Syn. -- forward pass [ WordNet 1.5 ]

2. a metallic wire, rod, or combination of rods connected to an electronic device, designed to send or receive radio or television signals.
Syn. -- antenna [ WordNet 1.5 ]

n. 1. an athlete who performs acts high above the ground on a trapeze or high wire, requiring skill and agility and coordination.
Syn. -- trapeze artist [ WordNet 1.5 +PJC ]

2. a burglar who gains entrance to buildings from the rooftop, sometimes leaping from building to building in the process. A type of second-story man. [ Slang ] [ PJC ]