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Unorganized :: Unorganized (a.) Not organized; being without organic structure; specifically (Biol.), not having the different tissues and organs characteristic of living organisms, nor the power of growth and development; as, the unorganized ferments. See the Note under Ferment, n., 1..

Sustentative :: Sustentation (n.) The aggregate of the functions by which a living organism is maintained in a normal condition of weight and growth.

Polyzoon :: Polyzoon (n.) One of the individual zooids forming the compound organism of a polyzoan.

Family :: Family (v. t.) A group of organisms, either animal or vegetable, related by certain points of resemblance in structure or development, more comprehensive than a genus, because it is usually based on fewer or less pronounced points of likeness. In zoology a family is less comprehesive than an order; in botany it is often considered the same thing as an order..

Plasmodium :: Plasmodium (n.) A naked mobile mass of protoplasm, formed by the union of several amoebalike young, and constituting one of the stages in the life cycle of Mycetozoa and other low organisms..

Organism :: Organism (n.) An organized being; a living body, either vegetable or animal, compozed of different organs or parts with functions which are separate, but mutually dependent, and essential to the life of the individual..

Electro-bioscopy :: Electro-bioscopy (n.) A method of determining the presence or absence of life in an animal organism with a current of electricity, by noting the presence or absence of muscular contraction..

Excitant :: Excitant (n.) An agent or influence which arouses vital activity, or produces increased action, in a living organism or in any of its tissues or parts; a stimulant..

Irritability :: Irritability (n.) A natural susceptibility, characteristic of all living organisms, tissues, and cells, to the influence of certain stimuli, response being manifested in a variety of ways, -- as that quality in plants by which they exhibit motion under suitable stimulation; esp., the property which living muscle processes, of responding either to a direct stimulus of its substance, or to the stimulating influence of its nerve fibers, the response being indicated by a change of form, or contracti

Micrococcus :: Micrococcus (n.) A genus of Spherobacteria, in the form of very small globular or oval cells, forming, by transverse division, filaments, or chains of cells, or in some cases single organisms shaped like dumb-bells (Diplococcus), all without the power of motion. See Illust. of Ascoccus..

Metamorphosis :: Metamorphosis (n.) A change in the form or function of a living organism, by a natural process of growth or development; as, the metamorphosis of the yolk into the embryo, of a tadpole into a frog, or of a bud into a blossom. Especially, that form of sexual reproduction in which an embryo undergoes a series of marked changes of external form, as the chrysalis stage, pupa stage, etc., in insects. In these intermediate stages sexual reproduction is usually impossible, but they ultimately pass into

Hypnocyst :: Hypnocyst (n.) A cyst in which some unicellular organisms temporarily inclose themselves, from which they emerge unchanged, after a period of drought or deficiency of food. In some instances, a process of spore formation seems to occur within such cysts..

Abiogenesis :: Abiogenesis (n.) The supposed origination of living organisms from lifeless matter; such genesis as does not involve the action of living parents; spontaneous generation; -- called also abiogeny, and opposed to biogenesis..

Panspermy :: Panspermy (n.) The doctrine that all organisms must come from living parents; biogenesis; -- the opposite of spontaneous generation.

Sting :: Stimulus (v. t.) That which excites or produces a temporary increase of vital action, either in the whole organism or in any of its parts; especially (Physiol.), any substance or agent capable of evoking the activity of a nerve or irritable muscle, or capable of producing an impression upon a sensory organ or more particularly upon its specific end organ..

Vaccine :: Vaccine (n.) any preparation used to render an organism immune to some disease, by inducing or increasing the natural immunity mechanisms. Prior to 1995, such preparations usually contained killed organisms of the type for which immunity was desired, and sometimes used live organisms having attenuated virulence. since that date, preparations containing only specific antigenic portions of the pathogenic organism are also used, some of which are prepared by genetic engineering techniques..

Embolus :: Embolus (n.) A plug of some substance lodged in a blood vessel, being brought thither by the blood current. It consists most frequently of a clot of fibrin, a detached shred of a morbid growth, a globule of fat, or a microscopic organism..

Anatomism :: Anatomism (n.) The doctrine that the anatomical structure explains all the phenomena of the organism or of animal life.

Antitoxine :: Antitoxine (n.) A substance (sometimes the product of a specific micro-organism and sometimes naturally present in the blood or tissues of an animal), capable of producing immunity from certain diseases, or of counteracting the poisonous effects of pathogenic bacteria..

Excitement :: Excitement (n.) A state of aroused or increased vital activity in an organism, or any of its organs or tissues..

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