ANGLE OF THE CENTRE. In fortification, the angle formed at the centre of the polygon by lines drawn from thence to the points of two adjacent bastions.
ANGLE OF THE VERTICAL. The difference between the geographical and geocentric latitudes of a place upon the earth's surface.
ANGLER. A fisherman, or one who angles for recreation rather than profit. Also a species of _Lophius_ or toad-fish; from its ugliness and habits called also the _sea-devil_. It throws out feelers by which small fry are enticed within its power.
ANGLING. The practice of catching fish by means of a rod, line, hook, and bait, which by its mixture of idleness and chance forms recreation; but however simple the art appears, it requires much nicety.
ANGON. A javelin formerly used by the French, the point of which resembled a _fleur-de-lis_: it is also generally applied to the half-pike or javelin.
ANGOSIADE. An astronomical falsehood; a term originating from the pretended observations of D'Angos at Malta.
ANGRA [Sp.] Bay or inlet.--_Angra grande_, _pequena_, &c., on the coasts of Spanish and Portuguese settlements.
ANGUILLIFORM. Applied to fishes having the shape, softness, and appearance of eels.
ANGULAR CRAB. An ugly long-armed crustacean--the _Goneplax angulata_--with eyes on remarkably long stalks.
ANGULAR DISTANCE. This term, when applied to celestial bodies, implies that the sun and moon, or moon and stars, are within measuring distance for lunars.
ANGULAR MOTION is that which describes an angle, or moves circularly round a point, as planets revolving about the sun.
ANGULAR VELOCITY. This is a term used in the orbits of double stars, and implies the motion in a certain time of one star round the other.
ANILLA. A commercial term for indigo, derived from the plant whence it is prepared. [Sp. _anil_, indigo, Indigofera; _alnyl_, Arab.]
ANIMAL FLOWERS. _Actiniæ_, or sea-anemones and similar animals, which project a circle of tentacula resembling flowers. Formerly they were all classed under zoophytes.
ANIMATE. The giving power or encouragement.--_To animate a battery_, to place guns in its embrasures.--_To animate a needle_, to magnetize it.--_To animate the crew_ in various ways for any special duty.
ANKER. An anker of brandy contains ten gallons. The kegs in which Hollands is mostly exported are ankers and half-ankers.