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Having the number of floral organs unequal, as four petals and six stamens.

A narrow circle of some distinct color on a surface or round an organ.

A displacement forward of an organ, esp. the uterus, in such manner that its axis is bent upon itself. T. G. Thomas.

A movable, articulated organ of sensation, attached to the heads of insects and Crustacea. There are two in the former, and usually four in the latter. They are used as organs of touch, and in some species of Crustacea the cavity of the ear is situated near the basal joint. In insects, they are popularly called horns,…

A displacement of an organ, esp. of the uterus, in such manner that its whole axis is directed further forward than usual.

A microscopic, bacterial organism (Bacillus anthracis), resembling transparent rods. [See Illust. under Bacillus.]

The science of the laws of the development of the human organism in relation to other organisms and to environment. -- An`thro*po*nom"ic*al (#), a.

Prevention of sepsis by excluding or destroying microorganisms.

tance which prevents or retards putrefaction, or destroys, or protects from, putrefactive organisms; as, salt, carbolic acid, alcohol, cinchona.

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.

Loss of the power of speech, or of the appropriate use of words, the vocal organs remaining intact, and the intelligence being preserved. It is dependent on injury or disease of the brain.

A depth of water so great that only those organisms can exist that do not assimilate.

An order of holothurians in which the internal respiratory organs are wanting; -- called also Apoda or Apodes.

One of certain animals that have no feet or footlike organs; esp. one of certain fabulous birds which were said to have no feet.

A group of cirripeds, destitute of footlike organs.

A collection of organs all of which unite in a common function; as, the respiratory apparatus.

A subordinate or subsidiary part or organ; an external organ or limb, esp. of the articulates. Antennæ and other appendages used for feeling. Carpenter.

n the young to suck, in aquatic fowls to enter into water and to swim; the tendency of an organized body to seek what satisfies the wants of its organism. These lacteals have mouths, and by animal selection or appetency the absorb such part of the fluid as is agreeable to their palate. E. Darwin.

lar tissues, in which nutritive matter from the blood is transformed on the surface of an organ into solid unorganized substance.

The act of seizing or taking hold of; seizure; as, the hand is an organ of apprehension. Sir T. Browne.