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Refinery :: Refinery (n.) A furnace in which cast iron is refined by the action of a blast on the molten metal.

Spermospore :: Spermospore (n.) The male germinal or seminal cell, from the breaking up of which the spermoblasts are formed and ultimately the spermatozoids; a spermatospore..

Jack :: Jack (n.) A wooden wedge for separating rocks rent by blasting.

Bioplast :: Bioplast (n.) A tiny mass of bioplasm, in itself a living unit and having formative power, as a living white blood corpuscle; bioblast..

Somatopleure :: Somatopleure (n.) The outer, or parietal, one of the two lamellae into which the vertebrate blastoderm divides on either side of the notochord, and from which the walls of the body and the amnion are developed. See Splanchnopleure..

Spermatogonium :: Spermatogonium (n.) A primitive seminal cell, occuring in masses in the seminal tubules. It divides into a mass (spermosphere) of small cells (spermoblast), which in turn give rise to spermatozoids..

Reveille :: Reveille (n.) The beat of drum, or bugle blast, about break of day, to give notice that it is time for the soldiers to rise, and for the sentinels to forbear challenging..

Blast :: Blast (v. i.) To blow; to blow on a trumpet.

Endoderm :: Endoderm (n.) The innermost layer of the blastoderm and the structures derived from it; the hypoblast; the entoblast. See Illust. of Ectoderm.

Blastemal :: Blastemal (a.) Relating to the blastema; rudimentary.

Smite :: Smite (v. t.) To blast; to destroy the life or vigor of, as by a stroke or by some visitation..

Triploblastic :: Triploblastic (a.) Of, pertaining to, or designating, that condition of the ovum in which there are three primary germinal layers, or in which the blastoderm splits into three layers..

Spermatoon :: Spermatoon (n.) A spermoblast.

Mesoderm :: Mesoderm (n.) The layer of the blastoderm, between the ectoderm and endoderm; mesoblast. See Illust. of Blastoderm and Ectoderm..

Gun :: Gun (n.) Violent blasts of wind.

Epiblastic :: Epiblastic (a.) Of or relating to, or consisting of, the epiblast..

Blastema :: Blastema (n.) The structureless, protoplasmic tissue of the embryo; the primitive basis of an organ yet unformed, from which it grows..

Cast Iron :: Cast iron () Highly carbonized iron, the direct product of the blast furnace; -- used for making castings, and for conversion into wrought iron and steel. It can not be welded or forged, is brittle, and sometimes very hard. Besides carbon, it contains sulphur, phosphorus, silica, etc..

Bessemer Steel :: Bessemer steel () Steel made directly from cast iron, by burning out a portion of the carbon and other impurities that the latter contains, through the agency of a blast of air which is forced through the molten metal; -- so called from Sir Henry Bessemer, an English engineer, the inventor of the process..

Blastoid :: Blastoid (n.) One of the Blastoidea.

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