‖n. (Zool.) A univalve mollusk of the genus Haliotis. The shell is lined with mother-of-pearl, and used for ornamental purposes; the sea-ear. Several large species are found on the coast of California, clinging closely to the rocks. [ 1913 Webster ]

{ } n. (Eccl. Hist.) One of a sect in Africa (4th century), mentioned by St. Augustine, who states that they married, but lived in continence, after the manner, as they pretended, of Abel. [ 1913 Webster ]

a. [ Gr. 'a priv. + E. biological. ] Pertaining to the study of inanimate things. [ 1913 Webster ]

adv. [ Pref. a- + bloom. ] In or into bloom; in a blooming state. Masson. [ 1913 Webster ]

n. [ Ar. aubūtīlūn. ] (Bot.) A genus of malvaceous plants of many species, found in the torrid and temperate zones of both continents; -- called also Indian mallow. [ 1913 Webster ]

a. (Zool.) Having a spiny head, as one of the Acanthocephala. [ 1913 Webster ]

a. [ Pref. a- not + carpel. ] (Bot.) Having no carpels. Opposite of carpellate.
Syn. -- acarpe [ 1913 Webster ]

{ } a. [ Gr. &unr_;; 'a priv. + &unr_; stalk or L. caulis stalk. See Cole. ] (Bot.) Same as Acaulescent. [ 1913 Webster ]

v. t. [ OF. encloyer, encloer, F. enclouer, to drive in a nail, fr. L. in + clavus nail. ] To fill to satiety; to stuff full; to clog; to overload; to burden. See Cloy. [ Obs. ] Chaucer. [ 1913 Webster ]

n. [ Gr. 'ake`falos without a head + ky`stis bladder. ] (Zool.) A larval entozoön in the form of a subglobular or oval vesicle, or hydatid, filled with fluid, sometimes found in the tissues of man and the lower animals; -- so called from the absence of a head or visible organs on the vesicle. These cysts are the immature stages of certain tapeworms. Also applied to similar cysts of different origin. [ 1913 Webster ]

a. Pertaining to, or resembling, the acephalocysts. [ 1913 Webster ]

a. [ See Acephal. ] [ 1913 Webster ]

1. Headless. [ 1913 Webster ]

2. (Zool.) Without a distinct head; -- a term applied to bivalve mollusks. [ 1913 Webster ]

3. (Bot.) Having the style spring from the base, instead of from the apex, as is the case in certain ovaries. [ 1913 Webster ]

4. Without a leader or chief. [ 1913 Webster ]

5. Wanting the beginning. [ 1913 Webster ]

A false or acephalous structure of sentence. De Quincey. [ 1913 Webster ]

6. (Pros.) Deficient at the beginning, as a line of poetry. Brande. [ 1913 Webster ]

a. [ Gr. 'a priv. + &unr_; lip. ] (Bot.) Without a lip. [ 1913 Webster ]

a. (Med.) Lacking bile. AS [ 1913 Webster ]

a. [ Gr. &unr_; without juice. ] (Physiol.) Without chyle. [ 1913 Webster ]

adj. 1. thriving in a relatively acid environment; -- especially of plants requiring a pH well below 7 alkaline-loving [ WordNet 1.5 ]

adj. 1. 1 growing well in an acid medium; said of some bacteria
Syn. -- aciduric [ WordNet 1.5 ]

a. [ L. acidulus, dim. of acidus. See Acid. ] Slightly sour; sub-acid; sourish; as, an acidulous tincture. E. Burke. [ 1913 Webster ]

Acidulous mineral waters, such as contain carbonic anhydride. [ 1913 Webster ]

a. Pertaining to acology. [ 1913 Webster ]

n. [ Gr. &unr_; remedy + -logy. ] Materia medica; the science of remedies. [ 1913 Webster ]

n. See Acolythist. [ 1913 Webster ]

{ } a. [ Gr. 'a priv. + &unr_; joint. ] (Nat. Hist.) Being without joints; jointless. [ 1913 Webster ]

n. 1. a colorless liquid compound (H2C:CH.CN); used as raw material for acrylic fibers, and as a solvent.
Syn. -- vinyl cyanide, cyanoethylene, 2-propenenitrile [ WordNet 1.5 +PJC ]

n. [ Gr. &unr_;, &unr_;, ray + -logy. ] The science which treats of rays of light, especially of the actinic or chemical rays. [ 1913 Webster ]

a. [ L. acutus sharp + E. lobe. ] (Bot.) Having acute lobes, as some leaves. [ 1913 Webster ]

{ } a. [ Gr. 'a priv. + &unr_; finger. ] (Zool.) (a) Without fingers or without toes. (b) Without claws on the feet (of crustaceous animals). [ 1913 Webster ]

‖n. [ Sp. ] A Spanish red wine made of the first ripe grapes. [ 1913 Webster ]

a. [ Gr. &unr_; invisible + &unr_; a bell. ] (Zool.) Applied to sexual zooids of hydroids, that have a saclike form and do not become free; -- opposed to phanerocodonic. [ 1913 Webster ]

n. [ Gr. &unr_; invisible + &unr_;, &unr_;, foot. ] (Zool.) An animal having feet that are not apparent. [ 1913 Webster ]

a. Pertaining to adenology. [ 1913 Webster ]

n. [ Adeno- + -logy. ] The part of physiology that treats of the glands. [ 1913 Webster ]

a. [ Adeno- + Gr. fy`llon leaf. ] (Bot.) Having glands on the leaves. [ 1913 Webster ]

n. See Allocution. [ Obs. ] [ 1913 Webster ]

‖ [ L., according to the value. ] (Com.) A term used to denote a duty or charge laid upon goods, at a certain rate per cent upon their value, as stated in their invoice, -- in opposition to a specific sum upon a given quantity or number; as, an ad valorem duty of twenty per cent. [ 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 ]

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 ]

n. [ Aëro- + lithology. ] The science of aërolites. [ 1913 Webster ]

{ } a. Of or pertaining to aërology. [ 1913 Webster ]

n. One versed in aërology. [ 1913 Webster ]

n. [ Aëro- + -logy: cf. F. aérologie. ] That department of physics which treats of the atmosphere. [ 1913 Webster ]

n. [ Gr. &unr_; to perceive + E. physiology. ] The science of sensation in relation to nervous action. H. Spenser. [ 1913 Webster ]

a. Pertaining to ætiology; pertaining to the cause; assigning a cause. -- Æ`ti*o*log"ic*al*ly, adv. [1913 Webster]

n. [ L. aetologia, Gr. a'itiologi`a; a'iti`a cause + lo`gos description: cf. F. étiologie. ] 1. The science, doctrine, or demonstration of causes; esp., the investigation of the causes of any disease; the science of the origin and development of things; etiology. AS [ 1913 Webster ]

2. The assignment of a cause. [ 1913 Webster ]

3. (Med.) The cause or origin of a disease. Now more commonly written etiology. [ PJC + AS ]

adv. & a. [ Pref. a- + float. ] 1. Borne on the water; floating; on board ship. [ 1913 Webster ]

On such a full sea are we now afloat. Shak. [ 1913 Webster ]

2. Moving; passing from place to place; in general circulation; as, a rumor is afloat. [ 1913 Webster ]

3. Unfixed; moving without guide or control; adrift; as, our affairs are all afloat. [ 1913 Webster ]

4. Covered with water bearing floating articles; flooded; as, the decks are afloat. [ Webster 1913 Suppl. ]

adv. & a. [ Pref. a- + flow. ] Flowing. [ 1913 Webster ]

Their founts aflow with tears. R. Browning. [ 1913 Webster ]

n. A glow of refulgence in the western sky after sunset. [ 1913 Webster ]

n. 1. 1 a fragrant lotion for a man's face after shaving.
Syn. -- after-shave [ WordNet 1.5 ]

{ ‖ } n. [ Gr. a`ga`llochon, of Eastern origin: cf. Skr. aguru, Heb. pl. ahālīm. ] A soft, resinous wood (Aquilaria Agallocha) of highly aromatic smell, burnt by the orientals as a perfume. It is called also agalwood and aloes wood. The name is also given to some other species. [ 1913 Webster ]

a. lasting through all time; unending; as, The agelong struggle for freedom.
Syn. -- unending [ WordNet 1.5 ]