%blast%

a. [ Gr. 'amfi` + blastiko`s tending to sprout. ] (Biol.) Segmenting unequally; -- said of telolecithal ova with complete segmentation. [ 1913 Webster ]

n. A crossbow. See Arbalest. [ 1913 Webster ]

‖n. [ Pref. archi + blastula. ] (Biol.) A hollow blastula, supposed to be the primitive form; a cœloblastula. [ 1913 Webster ]

n. [ Gr. bi`os life + -blast. ] (Biol.) Same as Bioplast. [ 1913 Webster ]

n. [ AS. bl&aemacr_;st a puff of wind, a blowing; akin to Icel. blāstr, OHG. blāst, and fr. a verb akin to Icel. blāsa to blow, OHG. blâsan, Goth. blēsan (in comp.); all prob. from the same root as E. blow. See Blow to eject air. ] 1. A violent gust of wind. [ 1913 Webster ]

And see where surly Winter passes off,
Far to the north, and calls his ruffian blasts;
His blasts obey, and quit the howling hill. Thomson. [ 1913 Webster ]

2. A forcible stream of air from an orifice, as from a bellows, the mouth, etc. Hence: The continuous blowing to which one charge of ore or metal is subjected in a furnace; as, to melt so many tons of iron at a blast. [ 1913 Webster ]

☞ The terms hot blast and cold blast are employed to designate whether the current is heated or not heated before entering the furnace. A blast furnace is said to be in blast while it is in operation, and out of blast when not in use. [ 1913 Webster ]

3. The exhaust steam from and engine, driving a column of air out of a boiler chimney, and thus creating an intense draught through the fire; also, any draught produced by the blast. [ 1913 Webster ]

4. The sound made by blowing a wind instrument; strictly, the sound produces at one breath. [ 1913 Webster ]

One blast upon his bugle horn
Were worth a thousand men. Sir W. Scott. [ 1913 Webster ]

The blast of triumph o'er thy grave. Bryant. [ 1913 Webster ]

5. A sudden, pernicious effect, as if by a noxious wind, especially on animals and plants; a blight. [ 1913 Webster ]

By the blast of God they perish. Job iv. 9. [ 1913 Webster ]

Virtue preserved from fell destruction's blast. Shak. [ 1913 Webster ]

6. The act of rending, or attempting to rend, heavy masses of rock, earth, etc., by the explosion of gunpowder, dynamite, etc.; also, the charge used for this purpose. “Large blasts are often used.” Tomlinson. [ 1913 Webster ]

7. A flatulent disease of sheep. [ 1913 Webster ]

Blast furnace, a furnace, usually a shaft furnace for smelting ores, into which air is forced by pressure. --
Blast hole, a hole in the bottom of a pump stock through which water enters. --
Blast nozzle, a fixed or variable orifice in the delivery end of a blast pipe; -- called also blast orifice. --
In full blast, in complete operation; in a state of great activity. See Blast, n., 2. [ Colloq. ] [ 1913 Webster ]

v. t. [ imp. & p. p. Blasted; p. pr. & vb. n. Blasting. ] 1. To injure, as by a noxious wind; to cause to wither; to stop or check the growth of, and prevent from fruit-bearing, by some pernicious influence; to blight; to shrivel. [ 1913 Webster ]

Seven thin ears, and blasted with the east wind. Gen. xii. 6. [ 1913 Webster ]

2. Hence, to affect with some sudden violence, plague, calamity, or blighting influence, which destroys or causes to fail; to visit with a curse; to curse; to ruin; as, to blast pride, hopes, or character. [ 1913 Webster ]

I'll cross it, though it blast me. Shak. [ 1913 Webster ]

Blasted with excess of light. T. Gray. [ 1913 Webster ]

3. To confound by a loud blast or din. [ 1913 Webster ]

Trumpeters,
With brazen din blast you the city's ear. Shak. [ 1913 Webster ]

4. To rend open by any explosive agent, as gunpowder, dynamite, etc.; to shatter; as, to blast rocks. [ 1913 Webster ]

v. i. 1. To be blighted or withered; as, the bud blasted in the blossom. [ 1913 Webster ]

2. To blow; to blow on a trumpet. [ Obs. ] [ 1913 Webster ]

Toke his blake trumpe faste
And gan to puffen and to blaste. Chaucer. [ 1913 Webster ]

[ Gr. blasto`s sprout, shoot. ] A suffix or terminal formative, used principally in biological terms, and signifying growth, formation; as, bioblast, epiblast, mesoblast, etc. [ 1913 Webster ]

a. 1. Blighted; withered. [ 1913 Webster ]

Upon this blasted heath. Shak. [ 1913 Webster ]

2. Confounded; accursed; detestable. [ 1913 Webster ]

Some of her own blasted gypsies. Sir W. Scott. [ 1913 Webster ]

3. Rent open by an explosive. [ 1913 Webster ]

The blasted quarry thunders, heard remote. Wordsworth. [ 1913 Webster ]

‖n.; pl. Blastemata [ Gr. bla`sthma bud, sprout. ] (Biol.) The structureless, protoplasmic tissue of the embryo; the primitive basis of an organ yet unformed, from which it grows. [ 1913 Webster ]

a. (Biol.) Relating to the blastema; rudimentary. [ 1913 Webster ]

a. (Biol.) Connected with, or proceeding from, the blastema; blastemal. [ 1913 Webster ]

n. One who, or that which, blasts or destroys. [ 1913 Webster ]

n. [ Gr. blasto`s sprout, fr. &unr_; to grow. ] (Biol.) A small, clear space in the segments of the ovum, the precursor of the nucleus. [ 1913 Webster ]

n. 1. A blast; destruction by a blast, or by some pernicious cause. [ 1913 Webster ]

I have smitten you with blasting and mildew. Amos iv. 9. [ 1913 Webster ]

2. The act or process of one who, or that which, blasts; the business of one who blasts. [ 1913 Webster ]

. A lamp provided with some arrangement for intensifying combustion by means of a blast. [ Webster 1913 Suppl. ]

n. A sudden stroke or injury produced by some destructive cause. [ Obs. ] Shak. [ 1913 Webster ]

a. [ Gr. &unr_; sprout, germ + &unr_; fruit. ] (Bot.) Germinating inside the pericarp, as the mangrove. Brande & C. [ 1913 Webster ]

n. [ Gr. blasto`s sprout + koi^los hollow. ] (Biol.) The cavity inside a blastula; -- also called segmentation cavity. [ 1913 Webster ]

adj. of or pertaining to a blastocoel. [ WordNet 1.5 ]

n. [ Gr. blasto`s sprout + E. cyst. ] (Biol.) The germinal vesicle. [ 1913 Webster ]

n. an undifferentiated embryonic cell. [ WordNet 1.5 ]

n. [ Gr. blasto`s sprout + E. derm. ] (Embryology) the early stage of an embryo after the first cleavages of the ovum; also, the layer of cells of which the early embryo is composed; specifically: (a) the early embryo developing from a blastodisc, after the blastocoel has formed. (b) in an insect embryo, the layer of cells that surrounds the internal mass of the yolk. [ PJC ]

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

n. a disc-shaped layer of cells on the surface of the yolk mass of an egg (such as that of a bird) which develops to form the embryo.
Syn. -- germinal disc, germinal area. [ WordNet 1.5 +PJC ]

n. the launching of a rocket, especially of a spacecraft, under its own power.
Syn. -- rocket firing, rocket launching, shoot. [ WordNet 1.5 ]

v. i. to begin ascending from the ground under rocket power; -- of a rocket. [ PJC ]

n. [ Gr. blasto`s sprout + E. genesis. ] (Biol.) Multiplication or increase by gemmation or budding. [ 1913 Webster ]

n. (Zool.) One of the Blastoidea. [ 1913 Webster ]

‖n. pl. [ NL., fr. Gr. blasto`s sprout + -oid. ] (Zool.) One of the divisions of Crinoidea found fossil in paleozoic rocks; pentremites. They are so named on account of their budlike form. [ 1913 Webster ]

n. [ Gr. blasto`s sprout + -mere. ] (Biol.) One of the segments first formed by the division of the ovum. Balfour. [ 1913 Webster ]

n. any of various yeastlike budding fungi of the genus Blastomyces; -- they may cause disease in humans and other animals. [ WordNet 1.5 ]

n. any of several fungal infections caused by blastomycetes; they are characterized by inflammatory lesions of skin and mucous membranes or internal organs. [ WordNet 1.5 ]

adj. of or pertaining to blastomycosis. [ WordNet 1.5 ]

n. [ Gr. blasto`s sprout + &unr_; to bear. ] (Biol.) That portion of the spermatospore which is not converted into spermatoblasts, but carries them. [ 1913 Webster ]

{ } a. Relating to the blastophore. [ 1913 Webster ]

n. [ Gr. blasto`s sprout + E. pore. ] (Biol.) The pore or opening leading into the cavity of invagination, or archenteron. [ See Illust. of Invagination. ] Balfour. [ 1913 Webster ]

adj. of or pertaining to a blastopore. [ WordNet 1.5 ]

n. [ Gr. blasto`s sprout + E. sphere. ] (Biol.) The hollow globe or sphere formed by the arrangement of the blastomeres on the periphery of an impregnated ovum. [ See Illust. of Invagination. ] [ 1913 Webster ]

n. [ Gr. blasto`s sprout, bud + &unr_; a pillar. ] (Zool.) In certain hydroids, an imperfect zooid, whose special function is to produce medusoid buds. See Hydroidea, and Athecata. [ 1913 Webster ]

The exhaust pipe of a steam engine, or any pipe delivering steam or air, when so constructed as to cause a blast. [ 1913 Webster ]

‖n. [ NL., dim. of Gr. blasto`s a sprout. ] (Biol.) That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm. [ 1913 Webster ]

n. (Biol.) Same as Blastula. [ 1913 Webster ]

a. 1. Affected by blasts; gusty. [ 1913 Webster ]

2. Causing blast or injury. [ Obs. ] Boyle. [ 1913 Webster ]

n. [ Gr. &unr_; color + -blast. ] An embryonic cell which develops into a pigment cell. [ 1913 Webster ]

n. [ Cnida + -blast. ] (Zool.) One of the cells which, in the Cœlenterata, develop into cnidæ. [ 1913 Webster ]

n. a vigorous and unrestrained verbal response; as, her tirade provoked a counterblast from her husband. [ WordNet 1.5 ]

n. [ Gr. ky`tos hollow vessel + -blast. ] (Biol.) The nucleus of a cell; the germinal or active spot of a cellule, through or in which cell development takes place. [ 1913 Webster ]