‖n. [ F., a watering place. ] (Masonry) The joint or interstice between stones, to be filled with mortar. Gwilt. [ 1913 Webster ]

‖n. [ F., fr. accoucher. See Accouchement. ] A man who assists women in childbirth; a man midwife; an obstetrician. [ 1913 Webster ]

‖n. [ F.., fem. of accoucher. ] A midwife. [ Recent ] Dunglison. [ 1913 Webster ]

n. [ Gr. 'a`kros extreme + teley`th end. ] (Eccles.) The end of a verse or psalm, or something added thereto, to be sung by the people, by way of a response. [ 1913 Webster ]

‖n.; pl. Aculei [ L., dim. of acus needle. ] 1. (Bot.) A prickle growing on the bark, as in some brambles and roses. Lindley. [ 1913 Webster ]

2. (Zool.) A sting. [ 1913 Webster ]

interj. & adv. [ OE. also adew, adewe, adue, F. &unr_; dieu, fr. L. ad to + deus God. ] Good-by; farewell; an expression of kind wishes at parting. [ 1913 Webster ]

n.; pl. Adieus A farewell; commendation to the care of God at parting. Shak. [ 1913 Webster ]

n. [ Aero- + therapeutics. ] (Med.) Treatment of disease by the use of air or other gases. AS [ Webster 1913 Suppl. ]

n. The state of being aërial; unsubstantiality. [ R. ] De Quincey. [ 1913 Webster ]

adv. Like, or from, the air; in an aërial manner. “A murmur heard aërially.” Tennyson. [ 1913 Webster ]

a. [ L. aër air + -ferous: cf. F. aérifère. ] Conveying or containing air; air-bearing; as, the windpipe is an aëriferous tube. [ 1913 Webster ]

n. [ Cf. F. aérification. See A&unr_;rify. ] 1. The act of combining air with another substance, or the state of being filled with air. [ 1913 Webster ]

2. The act of becoming aërified, or of changing from a solid or liquid form into an aëriform state; the state of being aëriform. [ 1913 Webster ]

a. [ L. aër air + -form: cf. F. aériforme. ] Having the form or nature of air, or of an elastic fluid; gaseous. Hence fig.: Unreal. [ 1913 Webster ]

v. t. [ L. aër air + -fly. ] 1. To infuse air into; to combine air with. [ 1913 Webster ]

2. To change into an aëriform state. [ 1913 Webster ]

n. An aëroplane, airship, or the like. [ Colloq. in 1900, now obsolescent. ] [ Webster 1913 Suppl. +PJC ]

. [ Gr. &unr_;, &unr_;, air. ] The combining form of the Greek word meaning air. [ 1913 Webster ]

a. (Biol.) Growing or thriving only in the presence of oxygen; also, pertaining to, or induced by, aërobies; as, aërobic fermentation. -- A`ër*o"bic*al*ly adv. [Webster 1913 Suppl.]

n. pl. [ Aëro- + Gr. bi`os life. ] (Biol.) Microörganisms which live in contact with the air and need oxygen for their growth; as the microbacteria which form on the surface of putrefactive fluids; aerobes. [ obsolescent ] [ Webster 1913 Suppl. +PJC ]

a. (Biol.) Related to, or of the nature of, aërobies; as, aërobiotic plants, which live only when supplied with free oxygen. [ 1913 Webster ]

n. [ Aëro- + boat. ] A form of hydro-aëroplane; a flying boat. [ Webster 1913 Suppl. ]

n. [ Aëro- + bus. ] An aëroplane or airship designed to carry passengers. Now called a passenger plane or commercial airliner. [ obsolescent ] [ Webster 1913 Suppl. +PJC ]

n. [ Aëro- + club. ] A club or association of persons interested in aëronautics. [ Webster 1913 Suppl. ]

n. [ Aëro- + curve. ] (Aëronautics) A modification of the aëroplane, having curved surfaces, the advantages of which were first demonstrated by Lilienthal. [ Webster 1913 Suppl. ]

n. [ Aëro- + cyst. ] (Bot.) One of the air cells of algals. [ 1913 Webster ]

n. [ Aëro- + Gr. &unr_; shaken, &unr_; to shake. ] (Aëronautics) The science of gliding and soaring flight. [ Webster 1913 Suppl. ]

n. [ Aëro- + Gr. &unr_; a running. ] (Aëronautics) (a) A shed for housing an airship or aëroplane. (b) A ground or field, esp. one equipped with housing and other facilities, used for flying purposes. -- A`ër*o*drom"ic a. [Webster 1913 Suppl.]

a. 1. Pertaining to the force of air in motion. [ 1913 Webster ]

2. having a shape designed to minimize wind resistance (aerodynamic drag) when moving through the air or other gas; -- used especially of vehicles; as, the aerodynamic styling of an automobile. [ PJC ]

n. [ Gr. &unr_; wheaten flour + -mancy: cf. F. aleuromancie. ] Divination by means of flour. Encyc. Brit. [ 1913 Webster ]

n. [ Gr. &unr_; flour + -meter. ] An instrument for determining the expansive properties, or quality, of gluten in flour. Knight. [ 1913 Webster ]

n. [ See Aleurone. ] Flour made of aleurone, used as a substitute for ordinary flour in preparing bread for diabetic persons. [ Webster 1913 Suppl. ]

n. [ Gr. &unr_; flour. ] (Bot.) An albuminoid substance which occurs in minute grains (“protein granules”) in maturing seeds and tubers; -- supposed to be a modification of protoplasm. [ 1913 Webster ]

a. (Bot.) Having the nature of aleurone. D. C. Eaton. [ 1913 Webster ]

n. a member of the people inhabiting the Aleutian Islands. Same as Aleutian, n.
Syn. -- Aleutian. [ WordNet 1.5 ]

n. 1. a member of the people inhabiting the Aleutian Islands.
Syn. -- Aleut [ WordNet 1.5 ]

n. 1. an archipelago in the North Pacific extending southwest from Alaska.
Syn. -- Aleutian Islands. [ WordNet 1.5 ]

{ } a. [ Said to be from the Russ. aleut a bold rock. ] Of or pertaining to a chain of islands between Alaska and Kamtchatka; also, designating these islands. [ 1913 Webster ]

‖n.; pl. Alvei [ L. ] The channel of a river. Weate. [ 1913 Webster ]

n. [ F., fr. L. amator lover, fr. amare to love. ] A person attached to a particular pursuit, study, or science as to music or painting; esp. one who cultivates any study or art, from taste or attachment, without pursuing it professionally. [ 1913 Webster ]

a. In the style of an amateur; superficial or defective like the work of an amateur. -- Am`a*teur"ish*ly, adv. -- Am`a*teur"ish*ness, n. [ 1913 Webster ]

n. Behavior that demonstrates a lack of professional competency. [ WordNet 1.5 ]

n. The practice, habit, or work of an amateur. [ 1913 Webster ]

n. The quality or character of an amateur. [ 1913 Webster ]

‖n. [ L. amœbaeus, Gr. &unr_;, alternate; L. amoebaeum carmen, Gr. &unr_; &unr_;, a responsive song, fr. &unr_; change. ] A poem in which persons are represented at speaking alternately; as the third and seventh eclogues of Virgil. [ 1913 Webster ]

‖n. pl. [ NL., fr. 'amfi` + &unr_; sinew, nerve. ] (Zool.) A division of Mollusca remarkable for the bilateral symmetry of the organs and the arrangement of the nerves. [ 1913 Webster ]

n. [ Gr. 'amfi` + &unr_; one who breathes, &unr_; to breathe. ] (Zool.) One of a tribe of Amphibia, which have both lungs and gills at the same time, as the proteus and siren. [ 1913 Webster ]

‖n. [ NL., fr. L. ancon elbow. ] (Anat.) A muscle of the elbow and forearm. [ 1913 Webster ]

n. Same as thiamin; a B vitamin (vitamin B1) that prevents beriberi. [ Also spelled aneurine. ]
Syn. -- vitamin B1, thiamin, antiberiberi factor [ WordNet 1.5 ]

n. [ Gr. 'aney`rysma, 'aneyrysmo`s, a widening, an opening; 'ana` up + e'yry`s wide. ] (Med.) A soft, usually pulsating, sac, containing blood or blood clot, arising from the abnormal dilation of the walls of an artery, vein or heart. The more common spelling is aneurysm. [ 1913 Webster + AS ]

a. (Med.) Of or pertaining to an aneurism; as, an aneurismal tumor; aneurismal diathesis. The more common spelling is aneurysmal. [ 1913 Webster + AS ]

adj. 1. of or pertaining to an aneurysm.
Syn. -- aneurismal [ WordNet 1.5 ]

n. 1. a sac-like widening of a blood vessel. [ WordNet 1.5 ]