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The act or process of forming spores; spore formation. See Illust. of Bacillus, b.

A small spore; a spore.

motion from phenomena, and afterwards to tell us how the properties and actions of all corporeal things follow from those manifest principles, would be a very great step in philosophy. Sir I. Newton.

Free from reproductive spores or germs; as, a sterile fluid.

Quality of being sterile; infecundity; also, the state of being free from germs or spores.

To destroy all spores or germs in (an organic fluid or mixture), as by heat, so as to prevent the development of bacterial or other organisms.

A special podlike or fusiform branch containing tetraspores. It is found in certain red algæ.

The minute breathing pores of leaves or other organs opening into the intercellular spaces, and usually bordered by two contractile cells.

Corporeal; material; firm. "Most ponderous and substantial things." Shak. The rainbow [appears to be] a large substantial arch. I. Watts.

To excrete sensible moisture from the pores of the skin; to perspire. Shak.

n algæ, yeasts, etc., are unicellular and reproduce vegetatively or by means of asexual spores; in the higher forms the plant body is a thallus, which may be filamentous or may consist of plates of cells; it is commonly undifferentiated into stem, leaves, and roots, and shows no distinct tissue systems; the fronds of…

A sheath; a case; as, the theca, or cell, of an anther; the theca, or spore case, of a fungus; the theca of the spinal cord.

Having the spores in thecæ, or cases.

To pass, as perspirable matter does, through the pores or interstices of textures; as, liquor may transude through leather or wood.

Fire tube (Steam Boilers), a tube which forms a flue. -- Tube coral. (Zoöl.) Same as Tubipore. -- Tube foot (Zoöl.), one of the ambulacral suckers of an echinoderm. -- Tube plate, or Tube sheet (Steam Boilers), a flue plate. See under Flue. -- Tube pouch (Mil.), a pouch containing priming tubes. -- Tube spinner (Z…

Free from a corporeal body; disembodied; as, unembodied spirits. Byron.

es), regarded at one time as a distinct genus. It is a summer stage preceding the teleutospore, or winter stage. See Uredinales, in the Supplement.

A hollow body shaped like an urn, in which the spores of mosses are contained; a spore case; a theca.

Plants without true flowers, and reproduced by minute spores of various kinds, or by simple cell division. { 1. Acrogens. -- Plants usually with distinct stems and leaves, existing in two alternate conditions, one of which is nonsexual and sporophoric, the other sexual and oöphoric. Divided into Vascular Acrogens, or…

re animal. The tube is closed at the anterior end by a convex disk perforated by numerous pores, or tubules, and resembling the rose of a watering pot. -- Watering trough, a trough from which cattle, horses, and other animals drink.